57640511 has 4 divisors (see below), whose sum is σ = 58981032. Its totient is φ = 56299992.

The previous prime is 57640493. The next prime is 57640519. The reversal of 57640511 is 11504675.

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 57640511 - 2⁶ = 57640447 is a prime.

It is a super-2 number, since 2×57640511² = 6644857016682242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57640519) 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 3 ways as a sum of consecutive naturals, for example, 670196 + ... + 670281.

It is an arithmetic number, because the mean of its divisors is an integer number (14745258).

Almost surely, 2^57640511 is an apocalyptic number.

57640511 is a deficient number, since it is larger than the sum of its proper divisors (1340521).

57640511 is a wasteful number, since it uses less digits than its factorization.

57640511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340520.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 57640511 is about 7592.1348117641. The cubic root of 57640511 is about 386.2862718387.

The spelling of 57640511 in words is "fifty-seven million, six hundred forty thousand, five hundred eleven".