53253720 has 128 divisors (see below), whose sum is σ = 191217600. Its totient is φ = 13105152.

The previous prime is 53253709. The next prime is 53253731. The reversal of 53253720 is 2735235.

It is an interprime number because it is at equal distance from previous prime (53253709) and next prime (53253731).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12144 + ... + 15936.

Almost surely, 2^53253720 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 53253720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95608800).

53253720 is an abundant number, since it is smaller than the sum of its proper divisors (137963880).

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

53253720 is a wasteful number, since it uses less digits than its factorization.

53253720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3826 (or 3816 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 53253720 is about 7297.5146454118. The cubic root of 53253720 is about 376.2270207413.

Adding to 53253720 its reverse (2735235), we get a palindrome (55988955).

It can be divided in two parts, 5325 and 3720, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 53253720 in words is "fifty-three million, two hundred fifty-three thousand, seven hundred twenty".