1121553504 has 72 divisors (see below), whose sum is σ = 3192822360. Its totient is φ = 373452288.

The previous prime is 1121553497. The next prime is 1121553523. The reversal of 1121553504 is 4053551211.

1121553504 is a `hidden beast` number, since 1 + 1 + 2 + 155 + 3 + 504 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 409612 + ... + 412340.

It is an arithmetic number, because the mean of its divisors is an integer number (44344755).

Almost surely, 2^1121553504 is an apocalyptic number.

It is an amenable number.

1121553504 is an abundant number, since it is smaller than the sum of its proper divisors (2071268856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121553504 is a wasteful number, since it uses less digits than its factorization.

1121553504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172 (or 4161 counting only the distinct ones).

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

The square root of 1121553504 is about 33489.6029238927. The cubic root of 1121553504 is about 1038.9787509437.

The spelling of 1121553504 in words is "one billion, one hundred twenty-one million, five hundred fifty-three thousand, five hundred four".