50136557 has 2 divisors, whose sum is σ = 50136558. Its totient is φ = 50136556.

The previous prime is 50136539. The next prime is 50136577. The reversal of 50136557 is 75563105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37039396 + 13097161 = 6086^2 + 3619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50136557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50136577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25068278 + 25068279.

It is an arithmetic number, because the mean of its divisors is an integer number (25068279).

Almost surely, 2^50136557 is an apocalyptic number.

It is an amenable number.

50136557 is a deficient number, since it is larger than the sum of its proper divisors (1).

50136557 is an equidigital number, since it uses as much as digits as its factorization.

50136557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 50136557 is about 7080.7172659272. The cubic root of 50136557 is about 368.7382318566.

The spelling of 50136557 in words is "fifty million, one hundred thirty-six thousand, five hundred fifty-seven".