531403045 has 4 divisors (see below), whose sum is σ = 637683660. Its totient is φ = 425122432.

The previous prime is 531403043. The next prime is 531403057. The reversal of 531403045 is 540304135.

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 69239041 + 462164004 = 8321^2 + 21498^2 .

It is a cyclic number.

It is not a de Polignac number, because 531403045 - 2¹ = 531403043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531403043) 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, 53140300 + ... + 53140309.

It is an arithmetic number, because the mean of its divisors is an integer number (159420915).

Almost surely, 2^531403045 is an apocalyptic number.

It is an amenable number.

531403045 is a deficient number, since it is larger than the sum of its proper divisors (106280615).

531403045 is a wasteful number, since it uses less digits than its factorization.

531403045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106280614.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 531403045 is about 23052.1809163472. The cubic root of 531403045 is about 809.9807164032.

The spelling of 531403045 in words is "five hundred thirty-one million, four hundred three thousand, forty-five".