531223445 has 8 divisors (see below), whose sum is σ = 637667640. Its totient is φ = 424845760.

The previous prime is 531223439. The next prime is 531223481. The reversal of 531223445 is 544322135.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26142769 + 505080676 = 5113^2 + 22474^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 531223445 - 2²² = 527029141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3071 + ... + 32739.

It is an arithmetic number, because the mean of its divisors is an integer number (79708455).

Almost surely, 2^531223445 is an apocalyptic number.

It is an amenable number.

531223445 is a deficient number, since it is larger than the sum of its proper divisors (106444195).

531223445 is a wasteful number, since it uses less digits than its factorization.

531223445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33255.

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

The square root of 531223445 is about 23048.2850772026. The cubic root of 531223445 is about 809.8894555233.

The spelling of 531223445 in words is "five hundred thirty-one million, two hundred twenty-three thousand, four hundred forty-five".