51190525 has 24 divisors (see below), whose sum is σ = 66852864. Its totient is φ = 38808000.

The previous prime is 51190507. The next prime is 51190547. The reversal of 51190525 is 52509115.

It is not a de Polignac number, because 51190525 - 2¹¹ = 51188477 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51190493 and 51190502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72675 + ... + 73375.

It is an arithmetic number, because the mean of its divisors is an integer number (2785536).

Almost surely, 2^51190525 is an apocalyptic number.

51190525 is the 5842-nd pentagonal number.

It is an amenable number.

51190525 is a deficient number, since it is larger than the sum of its proper divisors (15662339).

51190525 is a wasteful number, since it uses less digits than its factorization.

51190525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 51190525 is about 7154.7554116126. The cubic root of 51190525 is about 371.3041995185.

It can be divided in two parts, 51190 and 525, that added together give a palindrome (51715).

The spelling of 51190525 in words is "fifty-one million, one hundred ninety thousand, five hundred twenty-five".