51314172 has 120 divisors (see below), whose sum is σ = 151522896. Its totient is φ = 13434624.

The previous prime is 51314167. The next prime is 51314183. The reversal of 51314172 is 27141315.

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, 374488 + ... + 374624.

Almost surely, 2^51314172 is an apocalyptic number.

51314172 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51314172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75761448).

51314172 is an abundant number, since it is smaller than the sum of its proper divisors (100208724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51314172 is a wasteful number, since it uses less digits than its factorization.

51314172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 162 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 51314172 is about 7163.3910964012. The cubic root of 51314172 is about 371.6029119284.

Adding to 51314172 its reverse (27141315), we get a palindrome (78455487).

The spelling of 51314172 in words is "fifty-one million, three hundred fourteen thousand, one hundred seventy-two".