52639845 has 16 divisors (see below), whose sum is σ = 85240512. Its totient is φ = 27735680.

The previous prime is 52639831. The next prime is 52639877. The reversal of 52639845 is 54893625.

It is not a de Polignac number, because 52639845 - 2⁸ = 52639589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52639797 and 52639806.

It is a congruent number.

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, 19896 + ... + 22385.

It is an arithmetic number, because the mean of its divisors is an integer number (5327532).

Almost surely, 2^52639845 is an apocalyptic number.

It is an amenable number.

52639845 is a deficient number, since it is larger than the sum of its proper divisors (32600667).

52639845 is a wasteful number, since it uses less digits than its factorization.

52639845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42372.

The product of its digits is 259200, while the sum is 42.

The square root of 52639845 is about 7255.3321770957. The cubic root of 52639845 is about 374.7757948678.

The spelling of 52639845 in words is "fifty-two million, six hundred thirty-nine thousand, eight hundred forty-five".