51272925 has 48 divisors (see below), whose sum is σ = 97374720. Its totient is φ = 23544000.

The previous prime is 51272917. The next prime is 51272927. The reversal of 51272925 is 52927215.

It is a happy number.

It is not a de Polignac number, because 51272925 - 2³ = 51272917 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51272927) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14040 + ... + 17310.

It is an arithmetic number, because the mean of its divisors is an integer number (2028640).

Almost surely, 2^51272925 is an apocalyptic number.

51272925 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51272925 is a deficient number, since it is larger than the sum of its proper divisors (46101795).

51272925 is a wasteful number, since it uses less digits than its factorization.

51272925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314 (or 3309 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 51272925 is about 7160.5115040757. The cubic root of 51272925 is about 371.5033188183.

It can be divided in two parts, 512 and 72925, that added together give a palindrome (73437).

The spelling of 51272925 in words is "fifty-one million, two hundred seventy-two thousand, nine hundred twenty-five".