52185407 has 4 divisors (see below), whose sum is σ = 52221456. Its totient is φ = 52149360.

The previous prime is 52185391. The next prime is 52185409. The reversal of 52185407 is 70458125.

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 52185407 - 2⁴ = 52185391 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 (52185409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15758 + ... + 18779.

It is an arithmetic number, because the mean of its divisors is an integer number (13055364).

Almost surely, 2^52185407 is an apocalyptic number.

52185407 is a deficient number, since it is larger than the sum of its proper divisors (36049).

52185407 is a wasteful number, since it uses less digits than its factorization.

52185407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36048.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 52185407 is about 7223.9467744440. The cubic root of 52185407 is about 373.6942008323.

The spelling of 52185407 in words is "fifty-two million, one hundred eighty-five thousand, four hundred seven".