494072281 has 2 divisors, whose sum is σ = 494072282. Its totient is φ = 494072280.

The previous prime is 494072251. The next prime is 494072287. The reversal of 494072281 is 182270494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343175625 + 150896656 = 18525^2 + 12284^2 .

It is a cyclic number.

It is not a de Polignac number, because 494072281 - 2⁷ = 494072153 is a prime.

It is a super-2 number, since 2×494072281² = 488214837705085922, which contains 22 as substring.

It is a Chen prime.

It is equal to p_26059816 and since 494072281 and 26059816 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 494072281.

It is not a weakly prime, because it can be changed into another prime (494072287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247036140 + 247036141.

It is an arithmetic number, because the mean of its divisors is an integer number (247036141).

Almost surely, 2^494072281 is an apocalyptic number.

It is an amenable number.

494072281 is a deficient number, since it is larger than the sum of its proper divisors (1).

494072281 is an equidigital number, since it uses as much as digits as its factorization.

494072281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 494072281 is about 22227.7367493859. The cubic root of 494072281 is about 790.5514928218.

The spelling of 494072281 in words is "four hundred ninety-four million, seventy-two thousand, two hundred eighty-one".