57455380 has 96 divisors (see below), whose sum is σ = 134265600. Its totient is φ = 20579328.

The previous prime is 57455371. The next prime is 57455399. The reversal of 57455380 is 8355475.

57455380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×57455380² = 6602241381888800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 787024 + ... + 787096.

It is an arithmetic number, because the mean of its divisors is an integer number (1398600).

Almost surely, 2^57455380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57455380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67132800).

57455380 is an abundant number, since it is smaller than the sum of its proper divisors (76810220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57455380 is a wasteful number, since it uses less digits than its factorization.

57455380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 57455380 is about 7579.9327173795. The cubic root of 57455380 is about 385.8722675075.

The spelling of 57455380 in words is "fifty-seven million, four hundred fifty-five thousand, three hundred eighty".