531417491 has 4 divisors (see below), whose sum is σ = 579728184. Its totient is φ = 483106800.

The previous prime is 531417427. The next prime is 531417493. The reversal of 531417491 is 194714135.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 531417491 - 2⁶ = 531417427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531417493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24155330 + ... + 24155351.

It is an arithmetic number, because the mean of its divisors is an integer number (144932046).

Almost surely, 2^531417491 is an apocalyptic number.

531417491 is a deficient number, since it is larger than the sum of its proper divisors (48310693).

531417491 is a wasteful number, since it uses less digits than its factorization.

531417491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48310692.

The product of its digits is 15120, while the sum is 35.

The square root of 531417491 is about 23052.4942468272. The cubic root of 531417491 is about 809.9880560145.

The spelling of 531417491 in words is "five hundred thirty-one million, four hundred seventeen thousand, four hundred ninety-one".