5136661531 has 2 divisors, whose sum is σ = 5136661532. Its totient is φ = 5136661530.

The previous prime is 5136661513. The next prime is 5136661549. The reversal of 5136661531 is 1351666315.

Together with previous prime (5136661513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (5136661513) and next prime (5136661549).

It is a cyclic number.

It is not a de Polignac number, because 5136661531 - 2⁵ = 5136661499 is a prime.

It is a super-3 number, since 3×5136661531³ (a number of 30 digits) contains 333 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 (5136661561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2568330765 + 2568330766.

It is an arithmetic number, because the mean of its divisors is an integer number (2568330766).

Almost surely, 2^5136661531 is an apocalyptic number.

5136661531 is a deficient number, since it is larger than the sum of its proper divisors (1).

5136661531 is an equidigital number, since it uses as much as digits as its factorization.

5136661531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 37.

The square root of 5136661531 is about 71670.5067025482. The cubic root of 5136661531 is about 1725.4153203990.

The spelling of 5136661531 in words is "five billion, one hundred thirty-six million, six hundred sixty-one thousand, five hundred thirty-one".