50111557 has 2 divisors, whose sum is σ = 50111558. Its totient is φ = 50111556.

The previous prime is 50111519. The next prime is 50111609. The reversal of 50111557 is 75511105.

50111557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36796356 + 13315201 = 6066^2 + 3649^2 .

It is a cyclic number.

It is not a de Polignac number, because 50111557 - 2²³ = 41722949 is a prime.

It is a super-2 number, since 2×50111557² = 5022336289928498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50111657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25055778 + 25055779.

It is an arithmetic number, because the mean of its divisors is an integer number (25055779).

Almost surely, 2^50111557 is an apocalyptic number.

It is an amenable number.

50111557 is a deficient number, since it is larger than the sum of its proper divisors (1).

50111557 is an equidigital number, since it uses as much as digits as its factorization.

50111557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 875, while the sum is 25.

The square root of 50111557 is about 7078.9516879267. The cubic root of 50111557 is about 368.6769326835.

The spelling of 50111557 in words is "fifty million, one hundred eleven thousand, five hundred fifty-seven".