53249812 has 48 divisors (see below), whose sum is σ = 117637632. Its totient is φ = 20486880.

The previous prime is 53249809. The next prime is 53249827. The reversal of 53249812 is 21894235.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24523 + ... + 26605.

It is an arithmetic number, because the mean of its divisors is an integer number (2450784).

Almost surely, 2^53249812 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 53249812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58818816).

53249812 is an abundant number, since it is smaller than the sum of its proper divisors (64387820).

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

53249812 is a wasteful number, since it uses less digits than its factorization.

53249812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188 (or 2186 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 53249812 is about 7297.2468781041. The cubic root of 53249812 is about 376.2178174333.

The spelling of 53249812 in words is "fifty-three million, two hundred forty-nine thousand, eight hundred twelve".