52249931 has 4 divisors (see below), whose sum is σ = 52306632. Its totient is φ = 52193232.

The previous prime is 52249927. The next prime is 52249933. The reversal of 52249931 is 13994225.

52249931 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 52249931 - 2² = 52249927 is a prime.

It is a super-2 number, since 2×52249931² = 5460110579009522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52249891 and 52249900.

It is not an unprimeable number, because it can be changed into a prime (52249933) 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, 26945 + ... + 28818.

It is an arithmetic number, because the mean of its divisors is an integer number (13076658).

Almost surely, 2^52249931 is an apocalyptic number.

52249931 is a deficient number, since it is larger than the sum of its proper divisors (56701).

52249931 is an equidigital number, since it uses as much as digits as its factorization.

52249931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56700.

The product of its digits is 19440, while the sum is 35.

The square root of 52249931 is about 7228.4113745691. The cubic root of 52249931 is about 373.8481539203.

The spelling of 52249931 in words is "fifty-two million, two hundred forty-nine thousand, nine hundred thirty-one".