101087557 has 2 divisors, whose sum is σ = 101087558. Its totient is φ = 101087556.

The previous prime is 101087537. The next prime is 101087561. The reversal of 101087557 is 755780101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93721761 + 7365796 = 9681^2 + 2714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101087557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101087527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50543778 + 50543779.

It is an arithmetic number, because the mean of its divisors is an integer number (50543779).

Almost surely, 2^101087557 is an apocalyptic number.

It is an amenable number.

101087557 is a deficient number, since it is larger than the sum of its proper divisors (1).

101087557 is an equidigital number, since it uses as much as digits as its factorization.

101087557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 34.

The square root of 101087557 is about 10054.2308010111. The cubic root of 101087557 is about 465.8354841173.

The spelling of 101087557 in words is "one hundred one million, eighty-seven thousand, five hundred fifty-seven".