53144250 has 64 divisors (see below), whose sum is σ = 135008640. Its totient is φ = 13920000.

The previous prime is 53144209. The next prime is 53144251. The reversal of 53144250 is 5244135.

It is a super-2 number, since 2×53144250² = 5648622616125000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53144250.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53144251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43650 + ... + 44850.

It is an arithmetic number, because the mean of its divisors is an integer number (2109510).

Almost surely, 2^53144250 is an apocalyptic number.

53144250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 53144250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67504320).

53144250 is an abundant number, since it is smaller than the sum of its proper divisors (81864390).

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

53144250 is a wasteful number, since it uses less digits than its factorization.

53144250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 53144250 is about 7290.0102880586. The cubic root of 53144250 is about 375.9690492480.

Adding to 53144250 its reverse (5244135), we get a palindrome (58388385).

The spelling of 53144250 in words is "fifty-three million, one hundred forty-four thousand, two hundred fifty".