102097157 has 4 divisors (see below), whose sum is σ = 102423660. Its totient is φ = 101770656.

The previous prime is 102097147. The next prime is 102097181. The reversal of 102097157 is 751790201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751790201 = 17 ⋅44222953.

It can be written as a sum of positive squares in 2 ways, for example, as 2217121 + 99880036 = 1489^2 + 9994^2 .

It is a cyclic number.

It is not a de Polignac number, because 102097157 - 2⁸ = 102096901 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 (102097117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162782 + ... + 163407.

It is an arithmetic number, because the mean of its divisors is an integer number (25605915).

Almost surely, 2^102097157 is an apocalyptic number.

It is an amenable number.

102097157 is a deficient number, since it is larger than the sum of its proper divisors (326503).

102097157 is an equidigital number, since it uses as much as digits as its factorization.

102097157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326502.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 102097157 is about 10104.3137817469. The cubic root of 102097157 is about 467.3811752494.

The spelling of 102097157 in words is "one hundred two million, ninety-seven thousand, one hundred fifty-seven".