52731999 has 32 divisors (see below), whose sum is σ = 80441280. Its totient is φ = 34128000.

The previous prime is 52731953. The next prime is 52732003. The reversal of 52731999 is 99913725.

It is a happy number.

52731999 is a `hidden beast` number, since 527 + 31 + 9 + 99 = 666.

It is not a de Polignac number, because 52731999 - 2¹¹ = 52729951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52731929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166189 + ... + 166505.

It is an arithmetic number, because the mean of its divisors is an integer number (2513790).

Almost surely, 2^52731999 is an apocalyptic number.

52731999 is a deficient number, since it is larger than the sum of its proper divisors (27709281).

52731999 is a wasteful number, since it uses less digits than its factorization.

52731999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 482 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 52731999 is about 7261.6801774796. The cubic root of 52731999 is about 374.9943679154.

The spelling of 52731999 in words is "fifty-two million, seven hundred thirty-one thousand, nine hundred ninety-nine".