102291157 has 2 divisors, whose sum is σ = 102291158. Its totient is φ = 102291156.

The previous prime is 102291151. The next prime is 102291169. The reversal of 102291157 is 751192201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86601636 + 15689521 = 9306^2 + 3961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102291157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102291151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51145578 + 51145579.

It is an arithmetic number, because the mean of its divisors is an integer number (51145579).

Almost surely, 2^102291157 is an apocalyptic number.

It is an amenable number.

102291157 is a deficient number, since it is larger than the sum of its proper divisors (1).

102291157 is an equidigital number, since it uses as much as digits as its factorization.

102291157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 102291157 is about 10113.9090860063. The cubic root of 102291157 is about 467.6770195252.

The spelling of 102291157 in words is "one hundred two million, two hundred ninety-one thousand, one hundred fifty-seven".