53257812 has 12 divisors (see below), whose sum is σ = 124268256. Its totient is φ = 17752600.

The previous prime is 53257801. The next prime is 53257823. The reversal of 53257812 is 21875235.

It is an interprime number because it is at equal distance from previous prime (53257801) and next prime (53257823).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2219064 + ... + 2219087.

It is an arithmetic number, because the mean of its divisors is an integer number (10355688).

Almost surely, 2^53257812 is an apocalyptic number.

It is an amenable number.

53257812 is an abundant number, since it is smaller than the sum of its proper divisors (71010444).

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

53257812 is a wasteful number, since it uses less digits than its factorization.

53257812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438158 (or 4438156 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 53257812 is about 7297.7950094532. The cubic root of 53257812 is about 376.2366568853.

It can be divided in two parts, 532578 and 12, that multiplied together give a palindrome (6390936).

The spelling of 53257812 in words is "fifty-three million, two hundred fifty-seven thousand, eight hundred twelve".