57020651 has 4 divisors (see below), whose sum is σ = 57079992. Its totient is φ = 56961312.

The previous prime is 57020603. The next prime is 57020659. The reversal of 57020651 is 15602075.

57020651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57020651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57020651.

It is not an unprimeable number, because it can be changed into a prime (57020659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28205 + ... + 30158.

It is an arithmetic number, because the mean of its divisors is an integer number (14269998).

Almost surely, 2^57020651 is an apocalyptic number.

57020651 is a deficient number, since it is larger than the sum of its proper divisors (59341).

57020651 is an equidigital number, since it uses as much as digits as its factorization.

57020651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59340.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 57020651 is about 7551.2019573045. The cubic root of 57020651 is about 384.8965843563.

The spelling of 57020651 in words is "fifty-seven million, twenty thousand, six hundred fifty-one".