102387557 has 2 divisors, whose sum is σ = 102387558. Its totient is φ = 102387556.

The previous prime is 102387529. The next prime is 102387563. The reversal of 102387557 is 755783201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102232321 + 155236 = 10111^2 + 394^2 .

It is a cyclic number.

It is not a de Polignac number, because 102387557 - 2¹⁰ = 102386533 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102387557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102387517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51193778 + 51193779.

It is an arithmetic number, because the mean of its divisors is an integer number (51193779).

Almost surely, 2^102387557 is an apocalyptic number.

It is an amenable number.

102387557 is a deficient number, since it is larger than the sum of its proper divisors (1).

102387557 is an equidigital number, since it uses as much as digits as its factorization.

102387557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 102387557 is about 10118.6736779086. The cubic root of 102387557 is about 467.8238875794.

The spelling of 102387557 in words is "one hundred two million, three hundred eighty-seven thousand, five hundred fifty-seven".