52457481 has 12 divisors (see below), whose sum is σ = 76523460. Its totient is φ = 34624800.

The previous prime is 52457479. The next prime is 52457497. The reversal of 52457481 is 18475425.

52457481 is a `hidden beast` number, since 5 + 2 + 4 + 574 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27657081 + 24800400 = 5259^2 + 4980^2 .

It is not a de Polignac number, because 52457481 - 2¹ = 52457479 is a prime.

It is a super-2 number, since 2×52457481² = 5503574625730722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (52457281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27946 + ... + 29763.

It is an arithmetic number, because the mean of its divisors is an integer number (6376955).

Almost surely, 2^52457481 is an apocalyptic number.

It is an amenable number.

52457481 is a deficient number, since it is larger than the sum of its proper divisors (24065979).

52457481 is a wasteful number, since it uses less digits than its factorization.

52457481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57816 (or 57813 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 52457481 is about 7242.7536890329. The cubic root of 52457481 is about 374.3425065467.

The spelling of 52457481 in words is "fifty-two million, four hundred fifty-seven thousand, four hundred eighty-one".