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57553057 = 88365179
BaseRepresentation
bin1101101110001…
…1000010100001
311000021222221201
43123203002201
5104213144212
65413321201
71266123112
oct333430241
9130258851
1057553057
112a53a511
1217336201
13bc01283
147902209
1550bcb57
hex36e30a1

57553057 has 4 divisors (see below), whose sum is σ = 57619120. Its totient is φ = 57486996.

The previous prime is 57553021. The next prime is 57553063. The reversal of 57553057 is 75035575.

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 57553057 - 215 = 57520289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57553757) 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, 31707 + ... + 33472.

It is an arithmetic number, because the mean of its divisors is an integer number (14404780).

Almost surely, 257553057 is an apocalyptic number.

It is an amenable number.

57553057 is a deficient number, since it is larger than the sum of its proper divisors (66063).

57553057 is an equidigital number, since it uses as much as digits as its factorization.

57553057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66062.

The product of its (nonzero) digits is 91875, while the sum is 37.

The square root of 57553057 is about 7586.3731123640. The cubic root of 57553057 is about 386.0908110500.

The spelling of 57553057 in words is "fifty-seven million, five hundred fifty-three thousand, fifty-seven".

Divisors: 1 883 65179 57553057