51588139 has 2 divisors, whose sum is σ = 51588140. Its totient is φ = 51588138.

The previous prime is 51588113. The next prime is 51588161. The reversal of 51588139 is 93188515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51588139 - 2⁵ = 51588107 is a prime.

It is a super-4 number, since 4×51588139⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (51588169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25794069 + 25794070.

It is an arithmetic number, because the mean of its divisors is an integer number (25794070).

Almost surely, 2^51588139 is an apocalyptic number.

51588139 is a deficient number, since it is larger than the sum of its proper divisors (1).

51588139 is an equidigital number, since it uses as much as digits as its factorization.

51588139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 40.

The square root of 51588139 is about 7182.4883571086. The cubic root of 51588139 is about 372.2630693059.

The spelling of 51588139 in words is "fifty-one million, five hundred eighty-eight thousand, one hundred thirty-nine".