115551503 has 2 divisors, whose sum is σ = 115551504. Its totient is φ = 115551502.

The previous prime is 115551493. The next prime is 115551509. The reversal of 115551503 is 305155511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115551503 - 2⁴ = 115551487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115551509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57775751 + 57775752.

It is an arithmetic number, because the mean of its divisors is an integer number (57775752).

Almost surely, 2^115551503 is an apocalyptic number.

115551503 is a deficient number, since it is larger than the sum of its proper divisors (1).

115551503 is an equidigital number, since it uses as much as digits as its factorization.

115551503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1875, while the sum is 26.

The square root of 115551503 is about 10749.4884994589. The cubic root of 115551503 is about 487.0705442518.

The spelling of 115551503 in words is "one hundred fifteen million, five hundred fifty-one thousand, five hundred three".