51442125 has 32 divisors (see below), whose sum is σ = 97833216. Its totient is φ = 23515200.

The previous prime is 51442109. The next prime is 51442129. The reversal of 51442125 is 52124415.

51442125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51442125 - 2⁴ = 51442109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51442095 and 51442104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51442129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7174 + ... + 12423.

It is an arithmetic number, because the mean of its divisors is an integer number (3057288).

Almost surely, 2^51442125 is an apocalyptic number.

It is an amenable number.

51442125 is a deficient number, since it is larger than the sum of its proper divisors (46391091).

51442125 is a wasteful number, since it uses less digits than its factorization.

51442125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19622 (or 19612 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 51442125 is about 7172.3165713736. The cubic root of 51442125 is about 371.9115221998.

The spelling of 51442125 in words is "fifty-one million, four hundred forty-two thousand, one hundred twenty-five".