104156557 has 2 divisors, whose sum is σ = 104156558. Its totient is φ = 104156556.

The previous prime is 104156543. The next prime is 104156567. The reversal of 104156557 is 755651401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71048041 + 33108516 = 8429^2 + 5754^2 .

It is a cyclic number.

It is not a de Polignac number, because 104156557 - 2¹¹ = 104154509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104156527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52078278 + 52078279.

It is an arithmetic number, because the mean of its divisors is an integer number (52078279).

Almost surely, 2^104156557 is an apocalyptic number.

It is an amenable number.

104156557 is a deficient number, since it is larger than the sum of its proper divisors (1).

104156557 is an equidigital number, since it uses as much as digits as its factorization.

104156557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 104156557 is about 10205.7119790831. The cubic root of 104156557 is about 470.5027922511.

The spelling of 104156557 in words is "one hundred four million, one hundred fifty-six thousand, five hundred fifty-seven".