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80350553 = 131613363
BaseRepresentation
bin1001100101000…
…00110101011001
312121012020020102
410302200311121
5131032204203
611550105145
71663653113
oct462406531
9177166212
1080350553
11413a0618
1222aab1b5
1313853b0a
14a9583b3
1570c2888
hex4ca0d59

80350553 has 4 divisors (see below), whose sum is σ = 80964048. Its totient is φ = 79737060.

The previous prime is 80350519. The next prime is 80350577. The reversal of 80350553 is 35505308.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80350553 - 212 = 80346457 is a prime.

It is a super-2 number, since 2×803505532 = 12912422734811618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80350583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306551 + ... + 306812.

It is an arithmetic number, because the mean of its divisors is an integer number (20241012).

Almost surely, 280350553 is an apocalyptic number.

It is an amenable number.

80350553 is a deficient number, since it is larger than the sum of its proper divisors (613495).

80350553 is a wasteful number, since it uses less digits than its factorization.

80350553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613494.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 80350553 is about 8963.8469978018. The cubic root of 80350553 is about 431.5153905768.

The spelling of 80350553 in words is "eighty million, three hundred fifty thousand, five hundred fifty-three".

Divisors: 1 131 613363 80350553