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43454545 = 59789597
BaseRepresentation
bin1010010111000…
…1000001010001
310000202201102121
42211301001101
542111021140
64151214241
71035233431
oct245610121
9100681377
1043454545
1122590052
1212677381
139006064
145ab22c1
153c3564a
hex2971051

43454545 has 8 divisors (see below), whose sum is σ = 52683624. Its totient is φ = 34404864.

The previous prime is 43454531. The next prime is 43454561. The reversal of 43454545 is 54545434.

43454545 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 15586704 + 27867841 = 3948^2 + 5279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43454545 - 25 = 43454513 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

43454545 is a modest number, since divided by 4545 gives 4345 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 43454545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44314 + ... + 45283.

It is an arithmetic number, because the mean of its divisors is an integer number (6585453).

Almost surely, 243454545 is an apocalyptic number.

It is an amenable number.

43454545 is a deficient number, since it is larger than the sum of its proper divisors (9229079).

43454545 is an equidigital number, since it uses as much as digits as its factorization.

43454545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89699.

The product of its digits is 96000, while the sum is 34.

The square root of 43454545 is about 6592.0061438078. The cubic root of 43454545 is about 351.5699406294.

Adding to 43454545 its reverse (54545434), we get a palindrome (97999979).

The spelling of 43454545 in words is "forty-three million, four hundred fifty-four thousand, five hundred forty-five".

Divisors: 1 5 97 485 89597 447985 8690909 43454545