57021553272 has 64 divisors (see below), whose sum is σ = 154620900000. Its totient is φ = 17452789760.

The previous prime is 57021553271. The next prime is 57021553283. The reversal of 57021553272 is 27235512075.

It is a self number, because there is not a number n which added to its sum of digits gives 57021553272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57021553271) 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, 1687647 + ... + 1721102.

Almost surely, 2^57021553272 is an apocalyptic number.

It is an amenable number.

57021553272 is an abundant number, since it is smaller than the sum of its proper divisors (97599346728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57021553272 is a wasteful number, since it uses less digits than its factorization.

57021553272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408816 (or 3408812 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 39.

The spelling of 57021553272 in words is "fifty-seven billion, twenty-one million, five hundred fifty-three thousand, two hundred seventy-two".