57020657 has 8 divisors (see below), whose sum is σ = 59664384. Its totient is φ = 54390688.

The previous prime is 57020603. The next prime is 57020659. The reversal of 57020657 is 75602075.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57020657 - 2¹⁴ = 57004273 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5573 + ... + 12045.

It is an arithmetic number, because the mean of its divisors is an integer number (7458048).

Almost surely, 2^57020657 is an apocalyptic number.

It is an amenable number.

57020657 is a deficient number, since it is larger than the sum of its proper divisors (2643727).

57020657 is a wasteful number, since it uses less digits than its factorization.

57020657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6879.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 57020657 is about 7551.2023545923. The cubic root of 57020657 is about 384.8965978565.

The spelling of 57020657 in words is "fifty-seven million, twenty thousand, six hundred fifty-seven".