115661003 has 2 divisors, whose sum is σ = 115661004. Its totient is φ = 115661002.

The previous prime is 115660939. The next prime is 115661009. The reversal of 115661003 is 300166511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115661003 - 2⁶ = 115660939 is a prime.

It is a super-2 number, since 2×115661003² = 26754935229932018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115661003.

It is not a weakly prime, because it can be changed into another prime (115661009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57830501 + 57830502.

It is an arithmetic number, because the mean of its divisors is an integer number (57830502).

Almost surely, 2^115661003 is an apocalyptic number.

115661003 is a deficient number, since it is larger than the sum of its proper divisors (1).

115661003 is an equidigital number, since it uses as much as digits as its factorization.

115661003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 115661003 is about 10754.5805589990. The cubic root of 115661003 is about 487.2243497990.

The spelling of 115661003 in words is "one hundred fifteen million, six hundred sixty-one thousand, three".