531145227 has 16 divisors (see below), whose sum is σ = 731658240. Its totient is φ = 342384000.

The previous prime is 531145213. The next prime is 531145243. The reversal of 531145227 is 722541135.

It is not a de Polignac number, because 531145227 - 2⁷ = 531145099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 531145194 and 531145203.

It is not an unprimeable number, because it can be changed into a prime (531145207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188227 + ... + 191027.

It is an arithmetic number, because the mean of its divisors is an integer number (45728640).

Almost surely, 2^531145227 is an apocalyptic number.

531145227 is a deficient number, since it is larger than the sum of its proper divisors (200513013).

531145227 is a wasteful number, since it uses less digits than its factorization.

531145227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874.

The product of its digits is 8400, while the sum is 30.

The square root of 531145227 is about 23046.5881856730. The cubic root of 531145227 is about 809.8497038624.

The spelling of 531145227 in words is "five hundred thirty-one million, one hundred forty-five thousand, two hundred twenty-seven".