102513557 has 2 divisors, whose sum is σ = 102513558. Its totient is φ = 102513556.

The previous prime is 102513517. The next prime is 102513581. The reversal of 102513557 is 755315201.

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., 52867441 + 49646116 = 7271^2 + 7046^2 .

It is a cyclic number.

It is not a de Polignac number, because 102513557 - 2¹⁴ = 102497173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102513517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51256778 + 51256779.

It is an arithmetic number, because the mean of its divisors is an integer number (51256779).

Almost surely, 2^102513557 is an apocalyptic number.

It is an amenable number.

102513557 is a deficient number, since it is larger than the sum of its proper divisors (1).

102513557 is an equidigital number, since it uses as much as digits as its factorization.

102513557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 102513557 is about 10124.8978760282. The cubic root of 102513557 is about 468.0157131233.

Adding to 102513557 its reverse (755315201), we get a palindrome (857828758).

The spelling of 102513557 in words is "one hundred two million, five hundred thirteen thousand, five hundred fifty-seven".