104640157 has 2 divisors, whose sum is σ = 104640158. Its totient is φ = 104640156.

The previous prime is 104640139. The next prime is 104640169. The reversal of 104640157 is 751046401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76983076 + 27657081 = 8774^2 + 5259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104640157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104640257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52320078 + 52320079.

It is an arithmetic number, because the mean of its divisors is an integer number (52320079).

Almost surely, 2^104640157 is an apocalyptic number.

It is an amenable number.

104640157 is a deficient number, since it is larger than the sum of its proper divisors (1).

104640157 is an equidigital number, since it uses as much as digits as its factorization.

104640157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 104640157 is about 10229.3771560149. The cubic root of 104640157 is about 471.2298513151.

Adding to 104640157 its reverse (751046401), we get a palindrome (855686558).

The spelling of 104640157 in words is "one hundred four million, six hundred forty thousand, one hundred fifty-seven".