51354972 has 60 divisors (see below), whose sum is σ = 138609856. Its totient is φ = 16562880.

The previous prime is 51354937. The next prime is 51354983. The reversal of 51354972 is 27945315.

51354972 is a `hidden beast` number, since 513 + 54 + 97 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7488 + ... + 12600.

Almost surely, 2^51354972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51354972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69304928).

51354972 is an abundant number, since it is smaller than the sum of its proper divisors (87254884).

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

51354972 is a wasteful number, since it uses less digits than its factorization.

51354972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160 (or 5149 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 51354972 is about 7166.2383437896. The cubic root of 51354972 is about 371.7013732417.

It can be divided in two parts, 51354 and 972, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 51354972 in words is "fifty-one million, three hundred fifty-four thousand, nine hundred seventy-two".