51625562 has 4 divisors (see below), whose sum is σ = 77438346. Its totient is φ = 25812780.

The previous prime is 51625543. The next prime is 51625579. The reversal of 51625562 is 26552615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26552615 = 5 ⋅5310523.

It can be written as a sum of positive squares in only one way, i.e., 50282281 + 1343281 = 7091^2 + 1159^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12906389 + ... + 12906392.

Almost surely, 2^51625562 is an apocalyptic number.

51625562 is a deficient number, since it is larger than the sum of its proper divisors (25812784).

51625562 is a wasteful number, since it uses less digits than its factorization.

51625562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25812783.

The product of its digits is 18000, while the sum is 32.

The square root of 51625562 is about 7185.0930404554. The cubic root of 51625562 is about 372.3530630772.

The spelling of 51625562 in words is "fifty-one million, six hundred twenty-five thousand, five hundred sixty-two".