51625474 has 4 divisors (see below), whose sum is σ = 77438214. Its totient is φ = 25812736.

The previous prime is 51625463. The next prime is 51625477. The reversal of 51625474 is 47452615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36687249 + 14938225 = 6057^2 + 3865^2 .

It is not an unprimeable number, because it can be changed into a prime (51625477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12906367 + ... + 12906370.

Almost surely, 2^51625474 is an apocalyptic number.

51625474 is a deficient number, since it is larger than the sum of its proper divisors (25812740).

51625474 is a wasteful number, since it uses less digits than its factorization.

51625474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25812739.

The product of its digits is 33600, while the sum is 34.

The square root of 51625474 is about 7185.0869166629. The cubic root of 51625474 is about 372.3528515084.

The spelling of 51625474 in words is "fifty-one million, six hundred twenty-five thousand, four hundred seventy-four".