494953531 has 2 divisors, whose sum is σ = 494953532. Its totient is φ = 494953530.

The previous prime is 494953489. The next prime is 494953541. The reversal of 494953531 is 135359494.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 494953531 - 2²¹ = 492856379 is a prime.

It is a super-2 number, since 2×494953531² = 489957995698735922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (494953541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247476765 + 247476766.

It is an arithmetic number, because the mean of its divisors is an integer number (247476766).

Almost surely, 2^494953531 is an apocalyptic number.

494953531 is a deficient number, since it is larger than the sum of its proper divisors (1).

494953531 is an equidigital number, since it uses as much as digits as its factorization.

494953531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 43.

The square root of 494953531 is about 22247.5511236630. The cubic root of 494953531 is about 791.0212349584.

The spelling of 494953531 in words is "four hundred ninety-four million, nine hundred fifty-three thousand, five hundred thirty-one".