115640553 has 16 divisors (see below), whose sum is σ = 176454656. Its totient is φ = 65990160.

The previous prime is 115640543. The next prime is 115640563. The reversal of 115640553 is 355046511.

It is an interprime number because it is at equal distance from previous prime (115640543) and next prime (115640563).

It is not a de Polignac number, because 115640553 - 2⁵ = 115640521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115640553.

It is not an unprimeable number, because it can be changed into a prime (115640533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13938 + ... + 20628.

It is an arithmetic number, because the mean of its divisors is an integer number (11028416).

Almost surely, 2^115640553 is an apocalyptic number.

It is an amenable number.

115640553 is a deficient number, since it is larger than the sum of its proper divisors (60814103).

115640553 is an equidigital number, since it uses as much as digits as its factorization.

115640553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7524.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 115640553 is about 10753.6297592952. The cubic root of 115640553 is about 487.1956327582.

The spelling of 115640553 in words is "one hundred fifteen million, six hundred forty thousand, five hundred fifty-three".