531162145 has 4 divisors (see below), whose sum is σ = 637394580. Its totient is φ = 424929712.

The previous prime is 531162143. The next prime is 531162167. The reversal of 531162145 is 541261135.

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 329749281 + 201412864 = 18159^2 + 14192^2 .

It is a cyclic number.

It is not a de Polignac number, because 531162145 - 2¹ = 531162143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531162143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53116210 + ... + 53116219.

It is an arithmetic number, because the mean of its divisors is an integer number (159348645).

Almost surely, 2^531162145 is an apocalyptic number.

It is an amenable number.

531162145 is a deficient number, since it is larger than the sum of its proper divisors (106232435).

531162145 is a wasteful number, since it uses less digits than its factorization.

531162145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106232434.

The product of its digits is 3600, while the sum is 28.

The square root of 531162145 is about 23046.9552218943. The cubic root of 531162145 is about 809.8583021961.

The spelling of 531162145 in words is "five hundred thirty-one million, one hundred sixty-two thousand, one hundred forty-five".