57705090 has 64 divisors (see below), whose sum is σ = 148055040. Its totient is φ = 14351040.

The previous prime is 57705077. The next prime is 57705101. The reversal of 57705090 is 9050775.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37435 + ... + 38945.

It is an arithmetic number, because the mean of its divisors is an integer number (2313360).

Almost surely, 2^57705090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57705090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74027520).

57705090 is an abundant number, since it is smaller than the sum of its proper divisors (90349950).

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

57705090 is a wasteful number, since it uses less digits than its factorization.

57705090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607.

The product of its (nonzero) digits is 11025, while the sum is 33.

The square root of 57705090 is about 7596.3866410287. The cubic root of 57705090 is about 386.4304798516.

The spelling of 57705090 in words is "fifty-seven million, seven hundred five thousand, ninety".