531210045 has 16 divisors (see below), whose sum is σ = 856054080. Its totient is φ = 281272704.

The previous prime is 531209957. The next prime is 531210049. The reversal of 531210045 is 540012135.

It is not a de Polignac number, because 531210045 - 2¹¹ = 531207997 is a prime.

It is a super-2 number, since 2×531210045² = 564368223817804050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531210049) 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, 125304 + ... + 129473.

It is an arithmetic number, because the mean of its divisors is an integer number (53503380).

Almost surely, 2^531210045 is an apocalyptic number.

It is an amenable number.

531210045 is a deficient number, since it is larger than the sum of its proper divisors (324844035).

531210045 is a wasteful number, since it uses less digits than its factorization.

531210045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254924.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 531210045 is about 23047.9943812905. The cubic root of 531210045 is about 809.8826457022.

The spelling of 531210045 in words is "five hundred thirty-one million, two hundred ten thousand, forty-five".