51425472 has 112 divisors (see below), whose sum is σ = 157715712. Its totient is φ = 14484480.

The previous prime is 51425453. The next prime is 51425477. The reversal of 51425472 is 27452415.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (51425477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111322 + ... + 111782.

It is an arithmetic number, because the mean of its divisors is an integer number (1408176).

Almost surely, 2^51425472 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 51425472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78857856).

51425472 is an abundant number, since it is smaller than the sum of its proper divisors (106290240).

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

51425472 is a wasteful number, since it uses less digits than its factorization.

51425472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 556 counting only the distinct ones).

The product of its digits is 11200, while the sum is 30.

The square root of 51425472 is about 7171.1555554178. The cubic root of 51425472 is about 371.8713857615.

Adding to 51425472 its reverse (27452415), we get a palindrome (78877887).

The spelling of 51425472 in words is "fifty-one million, four hundred twenty-five thousand, four hundred seventy-two".