52642749 has 32 divisors (see below), whose sum is σ = 76912000. Its totient is φ = 31912704.

The previous prime is 52642703. The next prime is 52642757. The reversal of 52642749 is 94724625.

It is not a de Polignac number, because 52642749 - 2¹¹ = 52640701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52642769) 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, 229767 + ... + 229995.

It is an arithmetic number, because the mean of its divisors is an integer number (2403500).

Almost surely, 2^52642749 is an apocalyptic number.

It is an amenable number.

52642749 is a deficient number, since it is larger than the sum of its proper divisors (24269251).

52642749 is a wasteful number, since it uses less digits than its factorization.

52642749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its digits is 120960, while the sum is 39.

The square root of 52642749 is about 7255.5323030085. The cubic root of 52642749 is about 374.7826865351.

The spelling of 52642749 in words is "fifty-two million, six hundred forty-two thousand, seven hundred forty-nine".