51372123 has 24 divisors (see below), whose sum is σ = 75912144. Its totient is φ = 30877440.

The previous prime is 51372119. The next prime is 51372131. The reversal of 51372123 is 32127315.

It is not a de Polignac number, because 51372123 - 2² = 51372119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51372093 and 51372102.

It is not an unprimeable number, because it can be changed into a prime (51372023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49215 + ... + 50247.

It is an arithmetic number, because the mean of its divisors is an integer number (3163006).

Almost surely, 2^51372123 is an apocalyptic number.

51372123 is a deficient number, since it is larger than the sum of its proper divisors (24540021).

51372123 is a wasteful number, since it uses less digits than its factorization.

51372123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1184 counting only the distinct ones).

The product of its digits is 1260, while the sum is 24.

The square root of 51372123 is about 7167.4348968093. The cubic root of 51372123 is about 371.7427476238.

Adding to 51372123 its reverse (32127315), we get a palindrome (83499438).

It can be divided in two parts, 5137 and 2123, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 51372123 in words is "fifty-one million, three hundred seventy-two thousand, one hundred twenty-three".