265550953 has 4 divisors (see below), whose sum is σ = 265703680. Its totient is φ = 265398228.

The previous prime is 265550927. The next prime is 265550963. The reversal of 265550953 is 359055562.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 359055562 = 2 ⋅179527781.

It is a cyclic number.

It is not a de Polignac number, because 265550953 - 2⁵ = 265550921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265550903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73725 + ... + 77242.

It is an arithmetic number, because the mean of its divisors is an integer number (66425920).

Almost surely, 2^265550953 is an apocalyptic number.

It is an amenable number.

265550953 is a deficient number, since it is larger than the sum of its proper divisors (152727).

265550953 is a wasteful number, since it uses less digits than its factorization.

265550953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152726.

The product of its (nonzero) digits is 202500, while the sum is 40.

The square root of 265550953 is about 16295.7341964086. The cubic root of 265550953 is about 642.7606601328.

It can be divided in two parts, 2655509 and 53, that added together give a palindrome (2655562).

The spelling of 265550953 in words is "two hundred sixty-five million, five hundred fifty thousand, nine hundred fifty-three".