115554021 has 8 divisors (see below), whose sum is σ = 168078624. Its totient is φ = 70032720.

The previous prime is 115554007. The next prime is 115554077. The reversal of 115554021 is 120455511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115554021 - 2²³ = 107165413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115553982 and 115554000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115554091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750786 + ... + 1750851.

It is an arithmetic number, because the mean of its divisors is an integer number (21009828).

Almost surely, 2^115554021 is an apocalyptic number.

115554021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115554021 is a deficient number, since it is larger than the sum of its proper divisors (52524603).

115554021 is a wasteful number, since it uses less digits than its factorization.

115554021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501651.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 115554021 is about 10749.6056206728. The cubic root of 115554021 is about 487.0740821684.

It can be divided in two parts, 11555 and 4021, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 115554021 in words is "one hundred fifteen million, five hundred fifty-four thousand, twenty-one".