53188340 has 24 divisors (see below), whose sum is σ = 113529192. Its totient is φ = 20926080.

The previous prime is 53188339. The next prime is 53188361. The reversal of 53188340 is 4388135.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5550736 + 47637604 = 2356^2 + 6902^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53188297 and 53188306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20579 + ... + 23018.

It is an arithmetic number, because the mean of its divisors is an integer number (4730383).

Almost surely, 2^53188340 is an apocalyptic number.

It is an amenable number.

53188340 is an abundant number, since it is smaller than the sum of its proper divisors (60340852).

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

53188340 is a wasteful number, since it uses less digits than its factorization.

53188340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43667 (or 43665 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 53188340 is about 7293.0336623383. The cubic root of 53188340 is about 376.0729920915.

The spelling of 53188340 in words is "fifty-three million, one hundred eighty-eight thousand, three hundred forty".