51595489 has 9 divisors (see below), whose sum is σ = 56799379. Its totient is φ = 46833160.

The previous prime is 51595483. The next prime is 51595499. The reversal of 51595489 is 98459515.

The square root of 51595489 is 7183.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12006225 + 39589264 = 3465^2 + 6292^2 .

It is not a de Polignac number, because 51595489 - 2⁵ = 51595457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51595483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 78687 + ... + 79339.

Almost surely, 2^51595489 is an apocalyptic number.

51595489 is the 7183-rd square number.

51595489 is the 3592-nd centered octagonal number.

It is an amenable number.

51595489 is a deficient number, since it is larger than the sum of its proper divisors (5203890).

51595489 is an frugal number, since it uses more digits than its factorization.

51595489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328 (or 664 counting only the distinct ones).

The product of its digits is 324000, while the sum is 46.

The cubic root of 51595489 is about 372.2807478116.

It can be divided in two parts, 5159 and 5489, that added together give a cube (10648 = 22³).

The spelling of 51595489 in words is "fifty-one million, five hundred ninety-five thousand, four hundred eighty-nine".