57243906 has 24 divisors (see below), whose sum is σ = 124569900. Its totient is φ = 18998016.

The previous prime is 57243889. The next prime is 57243911. The reversal of 57243906 is 60934275.

It can be written as a sum of positive squares in 2 ways, for example, as 49070025 + 8173881 = 7005^2 + 2859^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2631 + ... + 11018.

Almost surely, 2^57243906 is an apocalyptic number.

57243906 is an abundant number, since it is smaller than the sum of its proper divisors (67325994).

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

57243906 is a wasteful number, since it uses less digits than its factorization.

57243906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13890 (or 13887 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 57243906 is about 7565.9702616386. The cubic root of 57243906 is about 385.3982633115.

The spelling of 57243906 in words is "fifty-seven million, two hundred forty-three thousand, nine hundred six".