494812261 has 2 divisors, whose sum is σ = 494812262. Its totient is φ = 494812260.

The previous prime is 494812249. The next prime is 494812273. The reversal of 494812261 is 162218494.

It is a balanced prime because it is at equal distance from previous prime (494812249) and next prime (494812273).

It can be written as a sum of positive squares in only one way, i.e., 424772100 + 70040161 = 20610^2 + 8369^2 .

It is a cyclic number.

It is not a de Polignac number, because 494812261 - 2¹⁹ = 494287973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 494812261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494812361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247406130 + 247406131.

It is an arithmetic number, because the mean of its divisors is an integer number (247406131).

Almost surely, 2^494812261 is an apocalyptic number.

It is an amenable number.

494812261 is a deficient number, since it is larger than the sum of its proper divisors (1).

494812261 is an equidigital number, since it uses as much as digits as its factorization.

494812261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 494812261 is about 22244.3759408980. The cubic root of 494812261 is about 790.9459698434.

The spelling of 494812261 in words is "four hundred ninety-four million, eight hundred twelve thousand, two hundred sixty-one".