57005631 has 6 divisors (see below), whose sum is σ = 82341480. Its totient is φ = 38003748.

The previous prime is 57005629. The next prime is 57005633. The reversal of 57005631 is 13650075.

It is an interprime number because it is at equal distance from previous prime (57005629) and next prime (57005633).

It is not a de Polignac number, because 57005631 - 2¹ = 57005629 is a prime.

It is a super-2 number, since 2×57005631² = 6499283931416322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57005595 and 57005604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57005633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3166971 + ... + 3166988.

It is an arithmetic number, because the mean of its divisors is an integer number (13723580).

Almost surely, 2^57005631 is an apocalyptic number.

57005631 is a deficient number, since it is larger than the sum of its proper divisors (25335849).

57005631 is a wasteful number, since it uses less digits than its factorization.

57005631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6333965 (or 6333962 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 57005631 is about 7550.2073481461. The cubic root of 57005631 is about 384.8627857571.

The spelling of 57005631 in words is "fifty-seven million, five thousand, six hundred thirty-one".