531145475 has 48 divisors (see below), whose sum is σ = 818042880. Its totient is φ = 333849600.

The previous prime is 531145451. The next prime is 531145477. The reversal of 531145475 is 574541135.

It is a happy number.

It is not a de Polignac number, because 531145475 - 2²⁴ = 514368259 is a prime.

It is a super-2 number, since 2×531145475² = 564231031225951250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (531145477) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100499 + ... + 105651.

It is an arithmetic number, because the mean of its divisors is an integer number (17042560).

Almost surely, 2^531145475 is an apocalyptic number.

531145475 is a deficient number, since it is larger than the sum of its proper divisors (286897405).

531145475 is a wasteful number, since it uses less digits than its factorization.

531145475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220 (or 5215 counting only the distinct ones).

The product of its digits is 42000, while the sum is 35.

The square root of 531145475 is about 23046.5935660783. The cubic root of 531145475 is about 809.8498299062.

The spelling of 531145475 in words is "five hundred thirty-one million, one hundred forty-five thousand, four hundred seventy-five".