553163561 has 8 divisors (see below), whose sum is σ = 586356480. Its totient is φ = 520043328.

The previous prime is 553163557. The next prime is 553163573. The reversal of 553163561 is 165361355.

It is a happy number.

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

It is not a de Polignac number, because 553163561 - 2² = 553163557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553123561) 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, 2081 + ... + 33326.

It is an arithmetic number, because the mean of its divisors is an integer number (73294560).

Almost surely, 2^553163561 is an apocalyptic number.

It is an amenable number.

553163561 is a deficient number, since it is larger than the sum of its proper divisors (33192919).

553163561 is a wasteful number, since it uses less digits than its factorization.

553163561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36343.

The product of its digits is 40500, while the sum is 35.

The square root of 553163561 is about 23519.4294361067. The cubic root of 553163561 is about 820.8891609178.

The spelling of 553163561 in words is "five hundred fifty-three million, one hundred sixty-three thousand, five hundred sixty-one".