451255261 has 4 divisors (see below), whose sum is σ = 451805724. Its totient is φ = 450704800.

The previous prime is 451255253. The next prime is 451255271. The reversal of 451255261 is 162552154.

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 228947161 + 222308100 = 15131^2 + 14910^2 .

It is a cyclic number.

It is not a de Polignac number, because 451255261 - 2³ = 451255253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451255271) 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, 274000 + ... + 275641.

It is an arithmetic number, because the mean of its divisors is an integer number (112951431).

Almost surely, 2^451255261 is an apocalyptic number.

It is an amenable number.

451255261 is a deficient number, since it is larger than the sum of its proper divisors (550463).

451255261 is an equidigital number, since it uses as much as digits as its factorization.

451255261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550462.

The product of its digits is 12000, while the sum is 31.

The square root of 451255261 is about 21242.7696169779. The cubic root of 451255261 is about 767.0213029966.

The spelling of 451255261 in words is "four hundred fifty-one million, two hundred fifty-five thousand, two hundred sixty-one".