53523444 has 48 divisors (see below), whose sum is σ = 139144320. Its totient is φ = 15899520.

The previous prime is 53523427. The next prime is 53523451. The reversal of 53523444 is 44432535.

It is a super-2 number, since 2×53523444² = 5729518115242272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392 + ... + 10439.

It is an arithmetic number, because the mean of its divisors is an integer number (2898840).

Almost surely, 2^53523444 is an apocalyptic number.

It is an amenable number.

53523444 is an abundant number, since it is smaller than the sum of its proper divisors (85620876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53523444 is a wasteful number, since it uses less digits than its factorization.

53523444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11880 (or 11878 counting only the distinct ones).

The product of its digits is 28800, while the sum is 30.

The square root of 53523444 is about 7315.9718424827. The cubic root of 53523444 is about 376.8611336477.

Adding to 53523444 its reverse (44432535), we get a palindrome (97955979).

Subtracting from 53523444 its reverse (44432535), we obtain a palindrome (9090909).

The spelling of 53523444 in words is "fifty-three million, five hundred twenty-three thousand, four hundred forty-four".