51501525 has 12 divisors (see below), whose sum is σ = 85149312. Its totient is φ = 27467440.

The previous prime is 51501503. The next prime is 51501539. The reversal of 51501525 is 52510515.

It is not a de Polignac number, because 51501525 - 2⁷ = 51501397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51501495 and 51501504.

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, 343269 + ... + 343418.

It is an arithmetic number, because the mean of its divisors is an integer number (7095776).

Almost surely, 2^51501525 is an apocalyptic number.

It is an amenable number.

51501525 is a deficient number, since it is larger than the sum of its proper divisors (33647787).

51501525 is a wasteful number, since it uses less digits than its factorization.

51501525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686700 (or 686695 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 51501525 is about 7176.4562982018. The cubic root of 51501525 is about 372.0546153481.

The spelling of 51501525 in words is "fifty-one million, five hundred one thousand, five hundred twenty-five".