553720165 has 4 divisors (see below), whose sum is σ = 664464204. Its totient is φ = 442976128.

The previous prime is 553720099. The next prime is 553720177. The reversal of 553720165 is 561027355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72488196 + 481231969 = 8514^2 + 21937^2 .

It is a cyclic number.

It is not a de Polignac number, because 553720165 - 2⁹ = 553719653 is a prime.

It is a super-2 number, since 2×553720165² = 613212042255254450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 553720165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55372012 + ... + 55372021.

It is an arithmetic number, because the mean of its divisors is an integer number (166116051).

Almost surely, 2^553720165 is an apocalyptic number.

It is an amenable number.

553720165 is a deficient number, since it is larger than the sum of its proper divisors (110744039).

553720165 is a wasteful number, since it uses less digits than its factorization.

553720165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110744038.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 553720165 is about 23531.2593160672. The cubic root of 553720165 is about 821.1644002007.

The spelling of 553720165 in words is "five hundred fifty-three million, seven hundred twenty thousand, one hundred sixty-five".