51371712 has 224 divisors, whose sum is σ = 179466240. Its totient is φ = 14100480.

The previous prime is 51371693. The next prime is 51371741. The reversal of 51371712 is 21717315.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 374908 + ... + 375044.

Almost surely, 2^51371712 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 51371712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89733120).

51371712 is an abundant number, since it is smaller than the sum of its proper divisors (128094528).

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

51371712 is a wasteful number, since it uses less digits than its factorization.

51371712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 180 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 51371712 is about 7167.4062254068. The cubic root of 51371712 is about 371.7417562516.

The spelling of 51371712 in words is "fifty-one million, three hundred seventy-one thousand, seven hundred twelve".