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57452002631 = 291981103539
BaseRepresentation
bin110101100000011001…
…111111110101000111
312111021221002010110022
4311200121333311013
51420130203041011
642220523445355
74102466651642
oct654031776507
9174257063408
1057452002631
1122402180a11
12b17468685b
1355578c403a
142ad030aa59
151763be58db
hexd6067fd47

57452002631 has 4 divisors (see below), whose sum is σ = 59433106200. Its totient is φ = 55470899064.

The previous prime is 57452002603. The next prime is 57452002661. The reversal of 57452002631 is 13620025475.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57452002631 - 26 = 57452002567 is a prime.

It is a super-2 number, since 2×574520026312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57452002591 and 57452002600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57452002661) 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, 990551741 + ... + 990551798.

It is an arithmetic number, because the mean of its divisors is an integer number (14858276550).

Almost surely, 257452002631 is an apocalyptic number.

57452002631 is a deficient number, since it is larger than the sum of its proper divisors (1981103569).

57452002631 is a wasteful number, since it uses less digits than its factorization.

57452002631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981103568.

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 57452002631 in words is "fifty-seven billion, four hundred fifty-two million, two thousand, six hundred thirty-one".

Divisors: 1 29 1981103539 57452002631