52259391 has 8 divisors (see below), whose sum is σ = 77421360. Its totient is φ = 34839576.

The previous prime is 52259387. The next prime is 52259393. The reversal of 52259391 is 19395225.

It is a happy number.

It is not a de Polignac number, because 52259391 - 2² = 52259387 is a prime.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52259393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 967740 + ... + 967793.

It is an arithmetic number, because the mean of its divisors is an integer number (9677670).

Almost surely, 2^52259391 is an apocalyptic number.

52259391 is a deficient number, since it is larger than the sum of its proper divisors (25161969).

52259391 is a wasteful number, since it uses less digits than its factorization.

52259391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935542 (or 1935536 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 52259391 is about 7229.0657072681. The cubic root of 52259391 is about 373.8707146527.

It can be divided in two parts, 52259 and 391, that added together give a triangular number (52650 = T₃₂₄).

The spelling of 52259391 in words is "fifty-two million, two hundred fifty-nine thousand, three hundred ninety-one".