553665 has 16 divisors (see below), whose sum is σ = 1012608. Its totient is φ = 253056.

The previous prime is 553649. The next prime is 553667. The reversal of 553665 is 566355.

It is not a de Polignac number, because 553665 - 2⁴ = 553649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (553667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2532 + ... + 2741.

It is an arithmetic number, because the mean of its divisors is an integer number (63288).

2⁵⁵³⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

553665 is a deficient number, since it is larger than the sum of its proper divisors (458943).

553665 is a wasteful number, since it uses less digits than its factorization.

553665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5288.

The product of its digits is 13500, while the sum is 30.

The square root of 553665 is about 744.0866884981. The cubic root of 553665 is about 82.1137129483.

The spelling of 553665 in words is "five hundred fifty-three thousand, six hundred sixty-five".