57458281 has 2 divisors, whose sum is σ = 57458282. Its totient is φ = 57458280.

The previous prime is 57458267. The next prime is 57458321. The reversal of 57458281 is 18285475.

It is an a-pointer prime, because the next prime (57458321) can be obtained adding 57458281 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35283600 + 22174681 = 5940^2 + 4709^2 .

It is a cyclic number.

It is not a de Polignac number, because 57458281 - 2¹⁵ = 57425513 is a prime.

It is a super-2 number, since 2×57458281² = 6602908110949922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57458381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28729140 + 28729141.

It is an arithmetic number, because the mean of its divisors is an integer number (28729141).

Almost surely, 2^57458281 is an apocalyptic number.

It is an amenable number.

57458281 is a deficient number, since it is larger than the sum of its proper divisors (1).

57458281 is an equidigital number, since it uses as much as digits as its factorization.

57458281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 40.

The square root of 57458281 is about 7580.1240755017. The cubic root of 57458281 is about 385.8787618027.

The spelling of 57458281 in words is "fifty-seven million, four hundred fifty-eight thousand, two hundred eighty-one".