254266561 has 4 divisors (see below), whose sum is σ = 256642992. Its totient is φ = 251890132.

The previous prime is 254266517. The next prime is 254266567. The reversal of 254266561 is 165662452.

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 254266561 - 2⁹ = 254266049 is a prime.

It is a super-3 number, since 3×254266561³ (a number of 26 digits) contains 333 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 254266561.

It is not an unprimeable number, because it can be changed into a prime (254266567) 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, 1188055 + ... + 1188268.

It is an arithmetic number, because the mean of its divisors is an integer number (64160748).

Almost surely, 2^254266561 is an apocalyptic number.

It is an amenable number.

254266561 is a deficient number, since it is larger than the sum of its proper divisors (2376431).

254266561 is a wasteful number, since it uses less digits than its factorization.

254266561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376430.

The product of its digits is 86400, while the sum is 37.

The square root of 254266561 is about 15945.7380199224. The cubic root of 254266561 is about 633.5240160526.

It can be divided in two parts, 254 and 266561, that added together give a triangular number (266815 = T₇₃₀).

The spelling of 254266561 in words is "two hundred fifty-four million, two hundred sixty-six thousand, five hundred sixty-one".