57272508 has 60 divisors (see below), whose sum is σ = 152947872. Its totient is φ = 18679680.

The previous prime is 57272503. The next prime is 57272513. The reversal of 57272508 is 80527275.

It is an interprime number because it is at equal distance from previous prime (57272503) and next prime (57272513).

It is a super-2 number, since 2×57272508² = 6560280345220128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57272503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13348 + ... + 17108.

Almost surely, 2^57272508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57272508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76473936).

57272508 is an abundant number, since it is smaller than the sum of its proper divisors (95675364).

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

57272508 is a wasteful number, since it uses less digits than its factorization.

57272508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3824 (or 3813 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 57272508 is about 7567.8601995544. The cubic root of 57272508 is about 385.4624408895.

The spelling of 57272508 in words is "fifty-seven million, two hundred seventy-two thousand, five hundred eight".