51272559 has 24 divisors (see below), whose sum is σ = 79999920. Its totient is φ = 31456512.

The previous prime is 51272537. The next prime is 51272563. The reversal of 51272559 is 95527215.

It is not a de Polignac number, because 51272559 - 2¹⁷ = 51141487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51272519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69012 + ... + 69750.

It is an arithmetic number, because the mean of its divisors is an integer number (3333330).

Almost surely, 2^51272559 is an apocalyptic number.

51272559 is a deficient number, since it is larger than the sum of its proper divisors (28727361).

51272559 is a wasteful number, since it uses less digits than its factorization.

51272559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1348 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 51272559 is about 7160.4859471966. The cubic root of 51272559 is about 371.5024348524.

The spelling of 51272559 in words is "fifty-one million, two hundred seventy-two thousand, five hundred fifty-nine".