52402187 has 4 divisors (see below), whose sum is σ = 52676736. Its totient is φ = 52127640.

The previous prime is 52402169. The next prime is 52402193. The reversal of 52402187 is 78120425.

52402187 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 52402187 - 2⁶ = 52402123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52402117) 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, 136988 + ... + 137369.

It is an arithmetic number, because the mean of its divisors is an integer number (13169184).

Almost surely, 2^52402187 is an apocalyptic number.

52402187 is a deficient number, since it is larger than the sum of its proper divisors (274549).

52402187 is a wasteful number, since it uses less digits than its factorization.

52402187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274548.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 52402187 is about 7238.9354880397. The cubic root of 52402187 is about 374.2109322308.

The spelling of 52402187 in words is "fifty-two million, four hundred two thousand, one hundred eighty-seven".