57622381 has 4 divisors (see below), whose sum is σ = 57637564. Its totient is φ = 57607200.

The previous prime is 57622351. The next prime is 57622387. The reversal of 57622381 is 18322675.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 33524100 + 24098281 = 5790^2 + 4909^2 .

It is a cyclic number.

It is not a de Polignac number, because 57622381 - 2⁵ = 57622349 is a prime.

It is a super-2 number, since 2×57622381² = 6640677584218322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57622387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3751 + ... + 11371.

It is an arithmetic number, because the mean of its divisors is an integer number (14409391).

Almost surely, 2^57622381 is an apocalyptic number.

It is an amenable number.

57622381 is a deficient number, since it is larger than the sum of its proper divisors (15183).

57622381 is an equidigital number, since it uses as much as digits as its factorization.

57622381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15182.

The product of its digits is 20160, while the sum is 34.

The square root of 57622381 is about 7590.9407190413. The cubic root of 57622381 is about 386.2457673140.

The spelling of 57622381 in words is "fifty-seven million, six hundred twenty-two thousand, three hundred eighty-one".