53390187 has 6 divisors (see below), whose sum is σ = 77119172. Its totient is φ = 35593452.

The previous prime is 53390177. The next prime is 53390231. The reversal of 53390187 is 78109335.

It is not a de Polignac number, because 53390187 - 2¹⁶ = 53324651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53390137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2966113 + ... + 2966130.

Almost surely, 2^53390187 is an apocalyptic number.

53390187 is a deficient number, since it is larger than the sum of its proper divisors (23728985).

53390187 is a wasteful number, since it uses less digits than its factorization.

53390187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5932249 (or 5932246 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 53390187 is about 7306.8589010600. The cubic root of 53390187 is about 376.5481174250.

The spelling of 53390187 in words is "fifty-three million, three hundred ninety thousand, one hundred eighty-seven".