52436639 has 4 divisors (see below), whose sum is σ = 52451256. Its totient is φ = 52422024.

The previous prime is 52436627. The next prime is 52436641. The reversal of 52436639 is 93663425.

52436639 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 52436639 - 2⁴ = 52436623 is a prime.

It is a super-2 number, since 2×52436639² = 5499202219232642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52436039) 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, 2177 + ... + 10469.

It is an arithmetic number, because the mean of its divisors is an integer number (13112814).

Almost surely, 2^52436639 is an apocalyptic number.

52436639 is a deficient number, since it is larger than the sum of its proper divisors (14617).

52436639 is an equidigital number, since it uses as much as digits as its factorization.

52436639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14616.

The product of its digits is 116640, while the sum is 38.

The square root of 52436639 is about 7241.3147286940. The cubic root of 52436639 is about 374.2929230244.

The spelling of 52436639 in words is "fifty-two million, four hundred thirty-six thousand, six hundred thirty-nine".