115551501 has 16 divisors (see below), whose sum is σ = 169053696. Its totient is φ = 69765696.

The previous prime is 115551493. The next prime is 115551503. The reversal of 115551501 is 105155511.

It is not a de Polignac number, because 115551501 - 2³ = 115551493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115551503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25885 + ... + 30018.

It is an arithmetic number, because the mean of its divisors is an integer number (10565856).

Almost surely, 2^115551501 is an apocalyptic number.

It is an amenable number.

115551501 is a deficient number, since it is larger than the sum of its proper divisors (53502195).

115551501 is a wasteful number, since it uses less digits than its factorization.

115551501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55972.

The product of its (nonzero) digits is 625, while the sum is 24.

The square root of 115551501 is about 10749.4884064313. The cubic root of 115551501 is about 487.0705414417.

The spelling of 115551501 in words is "one hundred fifteen million, five hundred fifty-one thousand, five hundred one".