523531444 has 6 divisors (see below), whose sum is σ = 916180034. Its totient is φ = 261765720.

The previous prime is 523531433. The next prime is 523531471. The reversal of 523531444 is 444135325.

It can be written as a sum of positive squares in only one way, i.e., 443607844 + 79923600 = 21062^2 + 8940^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65441427 + ... + 65441434.

Almost surely, 2^523531444 is an apocalyptic number.

It is an amenable number.

523531444 is a deficient number, since it is larger than the sum of its proper divisors (392648590).

523531444 is a wasteful number, since it uses less digits than its factorization.

523531444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130882865 (or 130882863 counting only the distinct ones).

The product of its digits is 28800, while the sum is 31.

The square root of 523531444 is about 22880.8095136514. The cubic root of 523531444 is about 805.9614268105.

Adding to 523531444 its reverse (444135325), we get a palindrome (967666769).

The spelling of 523531444 in words is "five hundred twenty-three million, five hundred thirty-one thousand, four hundred forty-four".