102253157 has 4 divisors (see below), whose sum is σ = 102543180. Its totient is φ = 101963136.

The previous prime is 102253111. The next prime is 102253171. The reversal of 102253157 is 751352201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81468676 + 20784481 = 9026^2 + 4559^2 .

It is a cyclic number.

It is not a de Polignac number, because 102253157 - 2⁶ = 102253093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102253357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144482 + ... + 145187.

It is an arithmetic number, because the mean of its divisors is an integer number (25635795).

Almost surely, 2^102253157 is an apocalyptic number.

It is an amenable number.

102253157 is a deficient number, since it is larger than the sum of its proper divisors (290023).

102253157 is an equidigital number, since it uses as much as digits as its factorization.

102253157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290022.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 102253157 is about 10112.0303104767. The cubic root of 102253157 is about 467.6191001235.

The spelling of 102253157 in words is "one hundred two million, two hundred fifty-three thousand, one hundred fifty-seven".