57502601209 has 9 divisors (see below), whose sum is σ = 59107849101. Its totient is φ = 55939844160.

The previous prime is 57502601203. The next prime is 57502601263. The reversal of 57502601209 is 90210620575.

The square root of 57502601209 is 239797.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 41569093225 + 15933507984 = 203885^2 + 126228^2 .

It is not a de Polignac number, because 57502601209 - 2⁷ = 57502601081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57502601203) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8869249 + ... + 8875729.

It is an arithmetic number, because the mean of its divisors is an integer number (6567538789).

Almost surely, 2^57502601209 is an apocalyptic number.

57502601209 is the 239797-th square number.

57502601209 is the 119899-th centered octagonal number.

It is an amenable number.

57502601209 is a deficient number, since it is larger than the sum of its proper divisors (1605247892).

57502601209 is an frugal number, since it uses more digits than its factorization.

57502601209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13036 (or 6518 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 57502601209 in words is "fifty-seven billion, five hundred two million, six hundred one thousand, two hundred nine".