51925161 has 4 divisors (see below), whose sum is σ = 69233552. Its totient is φ = 34616772.

The previous prime is 51925141. The next prime is 51925163. The reversal of 51925161 is 16152915.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51925161 - 2⁵ = 51925129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51925163) 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, 8654191 + ... + 8654196.

It is an arithmetic number, because the mean of its divisors is an integer number (17308388).

Almost surely, 2^51925161 is an apocalyptic number.

It is an amenable number.

51925161 is a deficient number, since it is larger than the sum of its proper divisors (17308391).

51925161 is a wasteful number, since it uses less digits than its factorization.

51925161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17308390.

The product of its digits is 2700, while the sum is 30.

The square root of 51925161 is about 7205.9115315136. The cubic root of 51925161 is about 373.0719672726.

The spelling of 51925161 in words is "fifty-one million, nine hundred twenty-five thousand, one hundred sixty-one".