53186740 has 12 divisors (see below), whose sum is σ = 111692196. Its totient is φ = 21274688.

The previous prime is 53186729. The next prime is 53186767. The reversal of 53186740 is 4768135.

It can be written as a sum of positive squares in 2 ways, for example, as 29877156 + 23309584 = 5466^2 + 4828^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53186696 and 53186705.

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, 1329649 + ... + 1329688.

It is an arithmetic number, because the mean of its divisors is an integer number (9307683).

Almost surely, 2^53186740 is an apocalyptic number.

It is an amenable number.

53186740 is an abundant number, since it is smaller than the sum of its proper divisors (58505456).

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

53186740 is a wasteful number, since it uses less digits than its factorization.

53186740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659346 (or 2659344 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 53186740 is about 7292.9239677923. The cubic root of 53186740 is about 376.0692210719.

The spelling of 53186740 in words is "fifty-three million, one hundred eighty-six thousand, seven hundred forty".