57403381 has 8 divisors (see below), whose sum is σ = 66394944. Its totient is φ = 48609600.

The previous prime is 57403363. The next prime is 57403387. The reversal of 57403381 is 18330475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57403381 - 2⁵ = 57403349 is a prime.

It is a super-2 number, since 2×57403381² = 6590296300462322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57403387) 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 7 ways as a sum of consecutive naturals, for example, 48820 + ... + 49981.

It is an arithmetic number, because the mean of its divisors is an integer number (8299368).

Almost surely, 2^57403381 is an apocalyptic number.

It is an amenable number.

57403381 is a deficient number, since it is larger than the sum of its proper divisors (8991563).

57403381 is an equidigital number, since it uses as much as digits as its factorization.

57403381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98891.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 57403381 is about 7576.5018973138. The cubic root of 57403381 is about 385.7558233599.

The spelling of 57403381 in words is "fifty-seven million, four hundred three thousand, three hundred eighty-one".