52501399 has 4 divisors (see below), whose sum is σ = 52565560. Its totient is φ = 52437240.

The previous prime is 52501391. The next prime is 52501411. The reversal of 52501399 is 99310525.

It is a happy number.

52501399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52501399 - 2³ = 52501391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52501391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30837 + ... + 32494.

It is an arithmetic number, because the mean of its divisors is an integer number (13141390).

Almost surely, 2^52501399 is an apocalyptic number.

52501399 is a deficient number, since it is larger than the sum of its proper divisors (64161).

52501399 is an equidigital number, since it uses as much as digits as its factorization.

52501399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64160.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 52501399 is about 7245.7849126233. The cubic root of 52501399 is about 374.4469453417.

It can be divided in two parts, 52501 and 399, that added together give a square (52900 = 230²).

The spelling of 52501399 in words is "fifty-two million, five hundred one thousand, three hundred ninety-nine".