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57715239053 = 2915121131617
BaseRepresentation
bin110101110000000110…
…001010100010001101
312111222021101220221102
4311300012022202031
51421200100122203
642303005512445
74112144303033
oct656006124215
9174867356842
1057715239053
112252782537a
12b228872725
13559a2bc434
142b17270553
15177bd91888
hexd7018a88d

57715239053 has 8 divisors (see below), whose sum is σ = 59709821880. Its totient is φ = 55720949760.

The previous prime is 57715239031. The next prime is 57715239067. The reversal of 57715239053 is 35093251775.

It can be written as a sum of positive squares in 4 ways, for example, as 15434832169 + 42280406884 = 124237^2 + 205622^2 .

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 57715239053 - 26 = 57715238989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57715238989 and 57715239007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57715239653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372701 + ... + 504317.

It is an arithmetic number, because the mean of its divisors is an integer number (7463727735).

Almost surely, 257715239053 is an apocalyptic number.

It is an amenable number.

57715239053 is a deficient number, since it is larger than the sum of its proper divisors (1994582827).

57715239053 is a wasteful number, since it uses less digits than its factorization.

57715239053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146767.

The product of its (nonzero) digits is 992250, while the sum is 47.

The spelling of 57715239053 in words is "fifty-seven billion, seven hundred fifteen million, two hundred thirty-nine thousand, fifty-three".

Divisors: 1 29 15121 131617 438509 3816893 1990180657 57715239053