51149525 has 12 divisors (see below), whose sum is σ = 72486432. Its totient is φ = 35073840.

The previous prime is 51149513. The next prime is 51149551. The reversal of 51149525 is 52594115.

It is not a de Polignac number, because 51149525 - 2⁸ = 51149269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51149491 and 51149500.

It is a congruent number.

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, 145967 + ... + 146316.

It is an arithmetic number, because the mean of its divisors is an integer number (6040536).

Almost surely, 2^51149525 is an apocalyptic number.

It is an amenable number.

51149525 is a deficient number, since it is larger than the sum of its proper divisors (21336907).

51149525 is a wasteful number, since it uses less digits than its factorization.

51149525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292300 (or 292295 counting only the distinct ones).

The product of its digits is 9000, while the sum is 32.

The square root of 51149525 is about 7151.8896104456. The cubic root of 51149525 is about 371.2050435497.

The spelling of 51149525 in words is "fifty-one million, one hundred forty-nine thousand, five hundred twenty-five".