57398881 has 2 divisors, whose sum is σ = 57398882. Its totient is φ = 57398880.

The previous prime is 57398843. The next prime is 57398897. The reversal of 57398881 is 18889375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42837025 + 14561856 = 6545^2 + 3816^2 .

It is a cyclic number.

It is not a de Polignac number, because 57398881 - 2¹⁹ = 56874593 is a prime.

It is a super-2 number, since 2×57398881² = 6589263080104322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57398821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28699440 + 28699441.

It is an arithmetic number, because the mean of its divisors is an integer number (28699441).

Almost surely, 2^57398881 is an apocalyptic number.

It is an amenable number.

57398881 is a deficient number, since it is larger than the sum of its proper divisors (1).

57398881 is an equidigital number, since it uses as much as digits as its factorization.

57398881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 49.

The square root of 57398881 is about 7576.2049206710. The cubic root of 57398881 is about 385.7457429632.

The spelling of 57398881 in words is "fifty-seven million, three hundred ninety-eight thousand, eight hundred eighty-one".