51377825 has 12 divisors (see below), whose sum is σ = 67456620. Its totient is φ = 38684160.

The previous prime is 51377813. The next prime is 51377827. The reversal of 51377825 is 52877315.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 583696 + 50794129 = 764^2 + 7127^2 .

It is not a de Polignac number, because 51377825 - 2⁸ = 51377569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51377827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60020 + ... + 60869.

It is an arithmetic number, because the mean of its divisors is an integer number (5621385).

Almost surely, 2^51377825 is an apocalyptic number.

It is an amenable number.

51377825 is a deficient number, since it is larger than the sum of its proper divisors (16078795).

51377825 is a wasteful number, since it uses less digits than its factorization.

51377825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120916 (or 120911 counting only the distinct ones).

The product of its digits is 58800, while the sum is 38.

The square root of 51377825 is about 7167.8326570868. The cubic root of 51377825 is about 371.7565008593.

The spelling of 51377825 in words is "fifty-one million, three hundred seventy-seven thousand, eight hundred twenty-five".