53091544 has 64 divisors (see below), whose sum is σ = 120061440. Its totient is φ = 21711360.

The previous prime is 53091523. The next prime is 53091557. The reversal of 53091544 is 44519035.

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, 33637 + ... + 35179.

It is an arithmetic number, because the mean of its divisors is an integer number (1875960).

Almost surely, 2^53091544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53091544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60030720).

53091544 is an abundant number, since it is smaller than the sum of its proper divisors (66969896).

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

53091544 is a wasteful number, since it uses less digits than its factorization.

53091544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600 (or 1596 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 53091544 is about 7286.3944444423. The cubic root of 53091544 is about 375.8447185874.

It can be divided in two parts, 53091 and 544, that added together give a palindrome (53635).

The spelling of 53091544 in words is "fifty-three million, ninety-one thousand, five hundred forty-four".