531322445 has 4 divisors (see below), whose sum is σ = 637586940. Its totient is φ = 425057952.

The previous prime is 531322439. The next prime is 531322453. The reversal of 531322445 is 544223135.

It is a happy number.

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 122190916 + 409131529 = 11054^2 + 20227^2 .

It is a cyclic number.

It is not a de Polignac number, because 531322445 - 2⁶ = 531322381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53132240 + ... + 53132249.

It is an arithmetic number, because the mean of its divisors is an integer number (159396735).

Almost surely, 2^531322445 is an apocalyptic number.

It is an amenable number.

531322445 is a deficient number, since it is larger than the sum of its proper divisors (106264495).

531322445 is a wasteful number, since it uses less digits than its factorization.

531322445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106264494.

The product of its digits is 14400, while the sum is 29.

The square root of 531322445 is about 23050.4326423605. The cubic root of 531322445 is about 809.9397633405.

The spelling of 531322445 in words is "five hundred thirty-one million, three hundred twenty-two thousand, four hundred forty-five".