113554521 has 32 divisors (see below), whose sum is σ = 172032000. Its totient is φ = 74013264.

The previous prime is 113554501. The next prime is 113554523. The reversal of 113554521 is 125455311.

113554521 is a `hidden beast` number, since 1 + 135 + 5 + 4 + 521 = 666.

It is not a de Polignac number, because 113554521 - 2⁹ = 113554009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (113554523) 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 31 ways as a sum of consecutive naturals, for example, 296296 + ... + 296678.

It is an arithmetic number, because the mean of its divisors is an integer number (5376000).

Almost surely, 2^113554521 is an apocalyptic number.

It is an amenable number.

113554521 is a deficient number, since it is larger than the sum of its proper divisors (58477479).

113554521 is a wasteful number, since it uses less digits than its factorization.

113554521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610 (or 604 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 113554521 is about 10656.1963664339. The cubic root of 113554521 is about 484.2483428866.

It can be divided in two parts, 11355 and 4521, that added together give a square (15876 = 126²).

The spelling of 113554521 in words is "one hundred thirteen million, five hundred fifty-four thousand, five hundred twenty-one".