53505252 has 48 divisors (see below), whose sum is σ = 139137600. Its totient is φ = 17781120.

The previous prime is 53505251. The next prime is 53505259. The reversal of 53505252 is 25250535.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53505251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52524 + ... + 53532.

It is an arithmetic number, because the mean of its divisors is an integer number (2898700).

Almost surely, 2^53505252 is an apocalyptic number.

It is an amenable number.

53505252 is an abundant number, since it is smaller than the sum of its proper divisors (85632348).

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

53505252 is a wasteful number, since it uses less digits than its factorization.

53505252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513 (or 1505 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 53505252 is about 7314.7284296821. The cubic root of 53505252 is about 376.8184318948.

Adding to 53505252 its reverse (25250535), we get a palindrome (78755787).

The spelling of 53505252 in words is "fifty-three million, five hundred five thousand, two hundred fifty-two".