57671520 has 96 divisors (see below), whose sum is σ = 183199968. Its totient is φ = 15249408.

The previous prime is 57671513. The next prime is 57671521. The reversal of 57671520 is 2517675.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×57671520² = 6652008438220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57671521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65322 + ... + 66198.

It is an arithmetic number, because the mean of its divisors is an integer number (1908333).

Almost surely, 2^57671520 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 57671520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91599984).

57671520 is an abundant number, since it is smaller than the sum of its proper divisors (125528448).

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

57671520 is a wasteful number, since it uses less digits than its factorization.

57671520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 57671520 is about 7594.1767164058. The cubic root of 57671520 is about 386.3555298624.

The spelling of 57671520 in words is "fifty-seven million, six hundred seventy-one thousand, five hundred twenty".