51152225 has 12 divisors (see below), whose sum is σ = 63917040. Its totient is φ = 40606800.

The previous prime is 51152197. The next prime is 51152243. The reversal of 51152225 is 52225115.

It is not a de Polignac number, because 51152225 - 2²⁰ = 50103649 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51152225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4535 + ... + 11084.

It is an arithmetic number, because the mean of its divisors is an integer number (5326420).

Almost surely, 2^51152225 is an apocalyptic number.

It is an amenable number.

51152225 is a deficient number, since it is larger than the sum of its proper divisors (12764815).

51152225 is a wasteful number, since it uses less digits than its factorization.

51152225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15760 (or 15755 counting only the distinct ones).

The product of its digits is 1000, while the sum is 23.

The square root of 51152225 is about 7152.0783692574. The cubic root of 51152225 is about 371.2115749625.

The spelling of 51152225 in words is "fifty-one million, one hundred fifty-two thousand, two hundred twenty-five".