53297244 has 384 divisors, whose sum is σ = 203212800. Its totient is φ = 11612160.

The previous prime is 53297243. The next prime is 53297263. The reversal of 53297244 is 44279235.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (60480) is a multiple of the sum of its prime factors (90).

It is a junction number, because it is equal to n+sod(n) for n = 53297199 and 53297208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53297243) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 1837822 + ... + 1837850.

It is an arithmetic number, because the mean of its divisors is an integer number (529200).

Almost surely, 2^53297244 is an apocalyptic number.

53297244 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53297244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101606400).

53297244 is an abundant number, since it is smaller than the sum of its proper divisors (149915556).

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

53297244 is a wasteful number, since it uses less digits than its factorization.

53297244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 82 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 53297244 is about 7300.4961475231. The cubic root of 53297244 is about 376.3294889872.

Subtracting from 53297244 its reverse (44279235), we obtain a square (9018009 = 3003²).

The spelling of 53297244 in words is "fifty-three million, two hundred ninety-seven thousand, two hundred forty-four".