51143125 has 40 divisors (see below), whose sum is σ = 71752032. Its totient is φ = 36120000.

The previous prime is 51143119. The next prime is 51143137. The reversal of 51143125 is 52134115.

It is a happy number.

It is not a de Polignac number, because 51143125 - 2⁵ = 51143093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51143096 and 51143105.

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, 295539 + ... + 295711.

Almost surely, 2^51143125 is an apocalyptic number.

51143125 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51143125 is a deficient number, since it is larger than the sum of its proper divisors (20608907).

51143125 is a wasteful number, since it uses less digits than its factorization.

51143125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 232 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 51143125 is about 7151.4421622495. The cubic root of 51143125 is about 371.1895607642.

The spelling of 51143125 in words is "fifty-one million, one hundred forty-three thousand, one hundred twenty-five".