65121172 has 12 divisors (see below), whose sum is σ = 114039520. Its totient is φ = 32538456.

The previous prime is 65121157. The next prime is 65121181. The reversal of 65121172 is 27112156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2329 + ... + 11647.

Almost surely, 2^65121172 is an apocalyptic number.

It is an amenable number.

65121172 is a deficient number, since it is larger than the sum of its proper divisors (48918348).

65121172 is a wasteful number, since it uses less digits than its factorization.

65121172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11070 (or 11068 counting only the distinct ones).

The product of its digits is 840, while the sum is 25.

The square root of 65121172 is about 8069.7690177600. The cubic root of 65121172 is about 402.3222666033.

The spelling of 65121172 in words is "sixty-five million, one hundred twenty-one thousand, one hundred seventy-two".