52642538 has 32 divisors (see below), whose sum is σ = 90671616. Its totient is φ = 22733568.

The previous prime is 52642529. The next prime is 52642543. The reversal of 52642538 is 83524625.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 52642498 and 52642507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27170 + ... + 29042.

It is an arithmetic number, because the mean of its divisors is an integer number (2833488).

Almost surely, 2^52642538 is an apocalyptic number.

52642538 is a deficient number, since it is larger than the sum of its proper divisors (38029078).

52642538 is a wasteful number, since it uses less digits than its factorization.

52642538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958.

The product of its digits is 57600, while the sum is 35.

The square root of 52642538 is about 7255.5177623654. The cubic root of 52642538 is about 374.7821858061.

The spelling of 52642538 in words is "fifty-two million, six hundred forty-two thousand, five hundred thirty-eight".