52502891 has 4 divisors (see below), whose sum is σ = 60003312. Its totient is φ = 45002472.

The previous prime is 52502887. The next prime is 52502903. The reversal of 52502891 is 19820525.

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 52502891 - 2² = 52502887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52502831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3750200 + ... + 3750213.

It is an arithmetic number, because the mean of its divisors is an integer number (15000828).

Almost surely, 2^52502891 is an apocalyptic number.

52502891 is a deficient number, since it is larger than the sum of its proper divisors (7500421).

52502891 is an equidigital number, since it uses as much as digits as its factorization.

52502891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7500420.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 52502891 is about 7245.8878683016. The cubic root of 52502891 is about 374.4504923554.

The spelling of 52502891 in words is "fifty-two million, five hundred two thousand, eight hundred ninety-one".