57522509 has 16 divisors (see below), whose sum is σ = 66951360. Its totient is φ = 48840960.

The previous prime is 57522497. The next prime is 57522539. The reversal of 57522509 is 90522575.

It is a cyclic number.

It is not a de Polignac number, because 57522509 - 2¹² = 57518413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57522539) 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, 24887 + ... + 27099.

It is an arithmetic number, because the mean of its divisors is an integer number (4184460).

Almost surely, 2^57522509 is an apocalyptic number.

It is an amenable number.

57522509 is a deficient number, since it is larger than the sum of its proper divisors (9428851).

57522509 is a wasteful number, since it uses less digits than its factorization.

57522509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 57522509 is about 7584.3594983360. The cubic root of 57522509 is about 386.0224892264.

The spelling of 57522509 in words is "fifty-seven million, five hundred twenty-two thousand, five hundred nine".