51308125 has 40 divisors (see below), whose sum is σ = 74226240. Its totient is φ = 35040000.

The previous prime is 51308119. The next prime is 51308141. The reversal of 51308125 is 52180315.

It is a happy number.

It is not a de Polignac number, because 51308125 - 2⁵ = 51308093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 51308125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 116656 + ... + 117094.

It is an arithmetic number, because the mean of its divisors is an integer number (1855656).

Almost surely, 2^51308125 is an apocalyptic number.

51308125 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51308125 is a deficient number, since it is larger than the sum of its proper divisors (22918115).

51308125 is a wasteful number, since it uses less digits than its factorization.

51308125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 51308125 is about 7162.9690073321. The cubic root of 51308125 is about 371.5883144596.

The spelling of 51308125 in words is "fifty-one million, three hundred eight thousand, one hundred twenty-five".