471531497 has 4 divisors (see below), whose sum is σ = 471954756. Its totient is φ = 471108240.

The previous prime is 471531491. The next prime is 471531527. The reversal of 471531497 is 794135174.

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

It can be written as a sum of positive squares in 2 ways, for example, as 69488896 + 402042601 = 8336^2 + 20051^2 .

It is a cyclic number.

It is not a de Polignac number, because 471531497 - 2⁶ = 471531433 is a prime.

It is a super-2 number, since 2×471531497² = 444683905326122018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (471531491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209954 + ... + 212187.

It is an arithmetic number, because the mean of its divisors is an integer number (117988689).

Almost surely, 2^471531497 is an apocalyptic number.

It is an amenable number.

471531497 is a deficient number, since it is larger than the sum of its proper divisors (423259).

471531497 is a wasteful number, since it uses less digits than its factorization.

471531497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423258.

The product of its digits is 105840, while the sum is 41.

The square root of 471531497 is about 21714.7760062129. The cubic root of 471531497 is about 778.3415876537.

The spelling of 471531497 in words is "four hundred seventy-one million, five hundred thirty-one thousand, four hundred ninety-seven".