51580889 has 2 divisors, whose sum is σ = 51580890. Its totient is φ = 51580888.

The previous prime is 51580853. The next prime is 51580897. The reversal of 51580889 is 98808515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49942489 + 1638400 = 7067^2 + 1280^2 .

It is a cyclic number.

It is not a de Polignac number, because 51580889 - 2²⁴ = 34803673 is a prime.

It is a super-2 number, since 2×51580889² = 5321176220060642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51586889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25790444 + 25790445.

It is an arithmetic number, because the mean of its divisors is an integer number (25790445).

Almost surely, 2^51580889 is an apocalyptic number.

It is an amenable number.

51580889 is a deficient number, since it is larger than the sum of its proper divisors (1).

51580889 is an equidigital number, since it uses as much as digits as its factorization.

51580889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 44.

The square root of 51580889 is about 7181.9836396361. The cubic root of 51580889 is about 372.2456296790.

The spelling of 51580889 in words is "fifty-one million, five hundred eighty thousand, eight hundred eighty-nine".