57353772021 has 16 divisors (see below), whose sum is σ = 94119010944. Its totient is φ = 30252538944.

The previous prime is 57353772017. The next prime is 57353772041. The reversal of 57353772021 is 12027735375.

It is not a de Polignac number, because 57353772021 - 2² = 57353772017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57353772041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105043266 + ... + 105043811.

It is an arithmetic number, because the mean of its divisors is an integer number (5882438184).

Almost surely, 2^57353772021 is an apocalyptic number.

It is an amenable number.

57353772021 is a deficient number, since it is larger than the sum of its proper divisors (36765238923).

57353772021 is a wasteful number, since it uses less digits than its factorization.

57353772021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210087100.

The product of its (nonzero) digits is 308700, while the sum is 42.

The spelling of 57353772021 in words is "fifty-seven billion, three hundred fifty-three million, seven hundred seventy-two thousand, twenty-one".