496391261 has 4 divisors (see below), whose sum is σ = 496447872. Its totient is φ = 496334652.

The previous prime is 496391257. The next prime is 496391263. The reversal of 496391261 is 162193694.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 496391261 - 2² = 496391257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (496391263) 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, 12035 + ... + 33728.

It is an arithmetic number, because the mean of its divisors is an integer number (124111968).

Almost surely, 2^496391261 is an apocalyptic number.

It is an amenable number.

496391261 is a deficient number, since it is larger than the sum of its proper divisors (56611).

496391261 is a wasteful number, since it uses less digits than its factorization.

496391261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56610.

The product of its digits is 69984, while the sum is 41.

The square root of 496391261 is about 22279.8397884724. The cubic root of 496391261 is about 791.7864081754.

The spelling of 496391261 in words is "four hundred ninety-six million, three hundred ninety-one thousand, two hundred sixty-one".