1061553204 has 18 divisors (see below), whose sum is σ = 2683370690. Its totient is φ = 353851056.

The previous prime is 1061553187. The next prime is 1061553209. The reversal of 1061553204 is 4023551601.

1061553204 is a `hidden beast` number, since 10 + 615 + 5 + 32 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1027330704 + 34222500 = 32052^2 + 5850^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1061553204² = 2253790409845331232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061553209) 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 5 ways as a sum of consecutive naturals, for example, 14743759 + ... + 14743830.

Almost surely, 2^1061553204 is an apocalyptic number.

It is an amenable number.

1061553204 is an abundant number, since it is smaller than the sum of its proper divisors (1621817486).

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

1061553204 is a wasteful number, since it uses less digits than its factorization.

1061553204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29487599 (or 29487594 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1061553204 is about 32581.4856014885. The cubic root of 1061553204 is about 1020.1105877790.

The spelling of 1061553204 in words is "one billion, sixty-one million, five hundred fifty-three thousand, two hundred four".