57521652 has 12 divisors (see below), whose sum is σ = 134217216. Its totient is φ = 19173880.

The previous prime is 57521617. The next prime is 57521671. The reversal of 57521652 is 25612575.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2396724 + ... + 2396747.

It is an arithmetic number, because the mean of its divisors is an integer number (11184768).

Almost surely, 2^57521652 is an apocalyptic number.

It is an amenable number.

57521652 is an abundant number, since it is smaller than the sum of its proper divisors (76695564).

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

57521652 is a wasteful number, since it uses less digits than its factorization.

57521652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4793478 (or 4793476 counting only the distinct ones).

The product of its digits is 21000, while the sum is 33.

The square root of 57521652 is about 7584.3030002763. The cubic root of 57521652 is about 386.0205721628.

The spelling of 57521652 in words is "fifty-seven million, five hundred twenty-one thousand, six hundred fifty-two".