57610621 has 2 divisors, whose sum is σ = 57610622. Its totient is φ = 57610620.

The previous prime is 57610601. The next prime is 57610643. The reversal of 57610621 is 12601675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39000025 + 18610596 = 6245^2 + 4314^2 .

It is a cyclic number.

It is not a de Polignac number, because 57610621 - 2⁵ = 57610589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57610621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57610601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28805310 + 28805311.

It is an arithmetic number, because the mean of its divisors is an integer number (28805311).

Almost surely, 2^57610621 is an apocalyptic number.

It is an amenable number.

57610621 is a deficient number, since it is larger than the sum of its proper divisors (1).

57610621 is an equidigital number, since it uses as much as digits as its factorization.

57610621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 57610621 is about 7590.1660719644. The cubic root of 57610621 is about 386.2194895657.

The spelling of 57610621 in words is "fifty-seven million, six hundred ten thousand, six hundred twenty-one".