53312340 has 48 divisors (see below), whose sum is σ = 158058432. Its totient is φ = 13380096.

The previous prime is 53312339. The next prime is 53312381. The reversal of 53312340 is 4321335.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25114 + ... + 27153.

It is an arithmetic number, because the mean of its divisors is an integer number (3292884).

Almost surely, 2^53312340 is an apocalyptic number.

It is an amenable number.

53312340 is an abundant number, since it is smaller than the sum of its proper divisors (104746092).

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

53312340 is a wasteful number, since it uses less digits than its factorization.

53312340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52296 (or 52294 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 53312340 is about 7301.5299766556. The cubic root of 53312340 is about 376.3650163632.

Adding to 53312340 its reverse (4321335), we get a palindrome (57633675).

The spelling of 53312340 in words is "fifty-three million, three hundred twelve thousand, three hundred forty".