53226144 has 144 divisors (see below), whose sum is σ = 162751680. Its totient is φ = 16450560.

The previous prime is 53226139. The next prime is 53226149. The reversal of 53226144 is 44162235.

It is an interprime number because it is at equal distance from previous prime (53226139) and next prime (53226149).

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53226149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388444 + ... + 388580.

It is an arithmetic number, because the mean of its divisors is an integer number (1130220).

Almost surely, 2^53226144 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 53226144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81375840).

53226144 is an abundant number, since it is smaller than the sum of its proper divisors (109525536).

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

53226144 is a wasteful number, since it uses less digits than its factorization.

53226144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 232 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 53226144 is about 7295.6249903624. The cubic root of 53226144 is about 376.1620698633.

Adding to 53226144 its reverse (44162235), we get a palindrome (97388379).

The spelling of 53226144 in words is "fifty-three million, two hundred twenty-six thousand, one hundred forty-four".