451202261 has 4 divisors (see below), whose sum is σ = 451252524. Its totient is φ = 451152000.

The previous prime is 451202243. The next prime is 451202273. The reversal of 451202261 is 162202154.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 229371025 + 221831236 = 15145^2 + 14894^2 .

It is a cyclic number.

It is not a de Polignac number, because 451202261 - 2¹⁸ = 450940117 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 (451202281) 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, 7580 + ... + 30981.

It is an arithmetic number, because the mean of its divisors is an integer number (112813131).

Almost surely, 2^451202261 is an apocalyptic number.

It is an amenable number.

451202261 is a deficient number, since it is larger than the sum of its proper divisors (50263).

451202261 is a wasteful number, since it uses less digits than its factorization.

451202261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50262.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 451202261 is about 21241.5220970626. The cubic root of 451202261 is about 766.9912728975.

The spelling of 451202261 in words is "four hundred fifty-one million, two hundred two thousand, two hundred sixty-one".