499481531 has 2 divisors, whose sum is σ = 499481532. Its totient is φ = 499481530.

The previous prime is 499481509. The next prime is 499481533. The reversal of 499481531 is 135184994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 499481531 - 2¹⁰ = 499480507 is a prime.

It is a super-2 number, since 2×499481531² = 498963599620207922, which contains 22 as substring.

Together with 499481533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (499481533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249740765 + 249740766.

It is an arithmetic number, because the mean of its divisors is an integer number (249740766).

Almost surely, 2^499481531 is an apocalyptic number.

499481531 is a deficient number, since it is larger than the sum of its proper divisors (1).

499481531 is an equidigital number, since it uses as much as digits as its factorization.

499481531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 44.

The square root of 499481531 is about 22349.0834487681. The cubic root of 499481531 is about 793.4260916931.

The spelling of 499481531 in words is "four hundred ninety-nine million, four hundred eighty-one thousand, five hundred thirty-one".