57378433 has 4 divisors (see below), whose sum is σ = 65575360. Its totient is φ = 49181508.

The previous prime is 57378413. The next prime is 57378449. The reversal of 57378433 is 33487375.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57378433 - 2⁵ = 57378401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57378413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4098453 + ... + 4098466.

It is an arithmetic number, because the mean of its divisors is an integer number (16393840).

Almost surely, 2^57378433 is an apocalyptic number.

It is an amenable number.

57378433 is a deficient number, since it is larger than the sum of its proper divisors (8196927).

57378433 is an equidigital number, since it uses as much as digits as its factorization.

57378433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8196926.

The product of its digits is 211680, while the sum is 40.

The square root of 57378433 is about 7574.8553121495. The cubic root of 57378433 is about 385.6999310028.

The spelling of 57378433 in words is "fifty-seven million, three hundred seventy-eight thousand, four hundred thirty-three".