51127725 has 48 divisors (see below), whose sum is σ = 95440320. Its totient is φ = 23923200.

The previous prime is 51127709. The next prime is 51127733. The reversal of 51127725 is 52772115.

It is not a de Polignac number, because 51127725 - 2⁴ = 51127709 is a prime.

It is a super-2 number, since 2×51127725² = 5228088527351250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51127692 and 51127701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22857 + ... + 24993.

It is an arithmetic number, because the mean of its divisors is an integer number (1988340).

Almost surely, 2^51127725 is an apocalyptic number.

51127725 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51127725 is a deficient number, since it is larger than the sum of its proper divisors (44312595).

51127725 is a wasteful number, since it uses less digits than its factorization.

51127725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190 (or 2185 counting only the distinct ones).

The product of its digits is 4900, while the sum is 30.

The square root of 51127725 is about 7150.3653752798. The cubic root of 51127725 is about 371.1523000174.

The spelling of 51127725 in words is "fifty-one million, one hundred twenty-seven thousand, seven hundred twenty-five".