57442770 has 192 divisors, whose sum is σ = 193729536. Its totient is φ = 11897280.

The previous prime is 57442741. The next prime is 57442771. The reversal of 57442770 is 7724475.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (57442771) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 186957 + ... + 187263.

It is an arithmetic number, because the mean of its divisors is an integer number (1009008).

Almost surely, 2^57442770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57442770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96864768).

57442770 is an abundant number, since it is smaller than the sum of its proper divisors (136286766).

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

57442770 is a wasteful number, since it uses less digits than its factorization.

57442770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 57442770 is about 7579.1008701560. The cubic root of 57442770 is about 385.8440357137.

The spelling of 57442770 in words is "fifty-seven million, four hundred forty-two thousand, seven hundred seventy".