51272458 has 4 divisors (see below), whose sum is σ = 76908690. Its totient is φ = 25636228.

The previous prime is 51272453. The next prime is 51272461. The reversal of 51272458 is 85427215.

It is a happy number.

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., 33489369 + 17783089 = 5787^2 + 4217^2 .

It is not an unprimeable number, because it can be changed into a prime (51272453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12818113 + ... + 12818116.

Almost surely, 2^51272458 is an apocalyptic number.

51272458 is a deficient number, since it is larger than the sum of its proper divisors (25636232).

51272458 is a wasteful number, since it uses less digits than its factorization.

51272458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25636231.

The product of its digits is 22400, while the sum is 34.

The square root of 51272458 is about 7160.4788945992. The cubic root of 51272458 is about 371.5021909158.

The spelling of 51272458 in words is "fifty-one million, two hundred seventy-two thousand, four hundred fifty-eight".