104555121 has 16 divisors (see below), whose sum is σ = 157325760. Its totient is φ = 61181120.

The previous prime is 104555093. The next prime is 104555131. The reversal of 104555121 is 121555401.

It is not a de Polignac number, because 104555121 - 2⁶ = 104555057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104555091 and 104555100.

It is not an unprimeable number, because it can be changed into a prime (104555131) 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, 53670 + ... + 55583.

It is an arithmetic number, because the mean of its divisors is an integer number (9832860).

Almost surely, 2^104555121 is an apocalyptic number.

104555121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

104555121 is a deficient number, since it is larger than the sum of its proper divisors (52770639).

104555121 is a wasteful number, since it uses less digits than its factorization.

104555121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109296.

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

The square root of 104555121 is about 10225.2198509372. The cubic root of 104555121 is about 471.1021681438.

It can be divided in two parts, 10455 and 5121, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 104555121 in words is "one hundred four million, five hundred fifty-five thousand, one hundred twenty-one".