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57561550001 = 232502676087
BaseRepresentation
bin110101100110111011…
…111000110010110001
312111120120012201012022
4311212323320302301
51420341224100001
642235435441225
74105300050014
oct654673706261
9174516181168
1057561550001
1122458aa352a
12b1a52b6215
1355744cb377
142b00aa537b
15176d63411b
hexd66ef8cb1

57561550001 has 4 divisors (see below), whose sum is σ = 60064226112. Its totient is φ = 55058873892.

The previous prime is 57561549961. The next prime is 57561550043. The reversal of 57561550001 is 10005516575.

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 57561550001 - 210 = 57561548977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57561550051) 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, 1251338021 + ... + 1251338066.

It is an arithmetic number, because the mean of its divisors is an integer number (15016056528).

Almost surely, 257561550001 is an apocalyptic number.

It is an amenable number.

57561550001 is a deficient number, since it is larger than the sum of its proper divisors (2502676111).

57561550001 is a wasteful number, since it uses less digits than its factorization.

57561550001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502676110.

The product of its (nonzero) digits is 26250, while the sum is 35.

The spelling of 57561550001 in words is "fifty-seven billion, five hundred sixty-one million, five hundred fifty thousand, one".

Divisors: 1 23 2502676087 57561550001