102309157 has 2 divisors, whose sum is σ = 102309158. Its totient is φ = 102309156.

The previous prime is 102309113. The next prime is 102309161. The reversal of 102309157 is 751903201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90136036 + 12173121 = 9494^2 + 3489^2 .

It is a cyclic number.

It is not a de Polignac number, because 102309157 - 2¹⁹ = 101784869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102309257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51154578 + 51154579.

It is an arithmetic number, because the mean of its divisors is an integer number (51154579).

Almost surely, 2^102309157 is an apocalyptic number.

It is an amenable number.

102309157 is a deficient number, since it is larger than the sum of its proper divisors (1).

102309157 is an equidigital number, since it uses as much as digits as its factorization.

102309157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 102309157 is about 10114.7989105073. The cubic root of 102309157 is about 467.7044500248.

The spelling of 102309157 in words is "one hundred two million, three hundred nine thousand, one hundred fifty-seven".