52751388 has 12 divisors (see below), whose sum is σ = 123086600. Its totient is φ = 17583792.

The previous prime is 52751359. The next prime is 52751389. The reversal of 52751388 is 88315725.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52751389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2197963 + ... + 2197986.

Almost surely, 2^52751388 is an apocalyptic number.

It is an amenable number.

52751388 is an abundant number, since it is smaller than the sum of its proper divisors (70335212).

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

52751388 is a wasteful number, since it uses less digits than its factorization.

52751388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395956 (or 4395954 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 52751388 is about 7263.0150763991. The cubic root of 52751388 is about 375.0403227752.

It can be divided in two parts, 527 and 51388, that added together give a palindrome (51915).

The spelling of 52751388 in words is "fifty-two million, seven hundred fifty-one thousand, three hundred eighty-eight".