255532553 has 4 divisors (see below), whose sum is σ = 266642688. Its totient is φ = 244422420.

The previous prime is 255532549. The next prime is 255532567. The reversal of 255532553 is 355235552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255532553 - 2² = 255532549 is a prime.

It is a super-4 number, since 4×255532553⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255532513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555033 + ... + 5555078.

It is an arithmetic number, because the mean of its divisors is an integer number (66660672).

Almost surely, 2^255532553 is an apocalyptic number.

255532553 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

255532553 is a deficient number, since it is larger than the sum of its proper divisors (11110135).

255532553 is a wasteful number, since it uses less digits than its factorization.

255532553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110134.

The product of its digits is 112500, while the sum is 35.

The square root of 255532553 is about 15985.3856068598. The cubic root of 255532553 is about 634.5737135185.

The spelling of 255532553 in words is "two hundred fifty-five million, five hundred thirty-two thousand, five hundred fifty-three".