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149555083 = 499929917
BaseRepresentation
bin10001110101000…
…00011110001011
3101102102012000011
420322200132023
5301241230313
622501252351
73464124436
oct1072403613
9342365004
10149555083
1177468a47
12421040b7
1324ca4542
1415c1081d
15d1e293d
hex8ea078b

149555083 has 4 divisors (see below), whose sum is σ = 149590000. Its totient is φ = 149520168.

The previous prime is 149555071. The next prime is 149555089. The reversal of 149555083 is 380555941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 380555941 = 3471096703.

It is a cyclic number.

It is not a de Polignac number, because 149555083 - 221 = 147457931 is a prime.

It is a super-2 number, since 2×1495550832 = 44733445702273778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149555089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9960 + ... + 19957.

It is an arithmetic number, because the mean of its divisors is an integer number (37397500).

Almost surely, 2149555083 is an apocalyptic number.

149555083 is a deficient number, since it is larger than the sum of its proper divisors (34917).

149555083 is an equidigital number, since it uses as much as digits as its factorization.

149555083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34916.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 149555083 is about 12229.2715645700. The cubic root of 149555083 is about 530.8034367148.

The spelling of 149555083 in words is "one hundred forty-nine million, five hundred fifty-five thousand, eighty-three".

Divisors: 1 4999 29917 149555083