51136339 has 2 divisors, whose sum is σ = 51136340. Its totient is φ = 51136338.

The previous prime is 51136321. The next prime is 51136381. The reversal of 51136339 is 93363115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51136339 - 2⁹ = 51135827 is a prime.

It is a super-2 number, since 2×51136339² = 5229850332645842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51136339.

It is not a weakly prime, because it can be changed into another prime (51136739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25568169 + 25568170.

It is an arithmetic number, because the mean of its divisors is an integer number (25568170).

Almost surely, 2^51136339 is an apocalyptic number.

51136339 is a deficient number, since it is larger than the sum of its proper divisors (1).

51136339 is an equidigital number, since it uses as much as digits as its factorization.

51136339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7290, while the sum is 31.

The square root of 51136339 is about 7150.9676967527. The cubic root of 51136339 is about 371.1731427623.

The spelling of 51136339 in words is "fifty-one million, one hundred thirty-six thousand, three hundred thirty-nine".