53623140 has 24 divisors (see below), whose sum is σ = 150144960. Its totient is φ = 14299488.

The previous prime is 53623093. The next prime is 53623159. The reversal of 53623140 is 4132635.

It is a happy number.

It is a super-2 number, since 2×53623140² = 5750882286919200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53623140.

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, 446800 + ... + 446919.

It is an arithmetic number, because the mean of its divisors is an integer number (6256040).

Almost surely, 2^53623140 is an apocalyptic number.

It is an amenable number.

53623140 is an abundant number, since it is smaller than the sum of its proper divisors (96521820).

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

53623140 is a wasteful number, since it uses less digits than its factorization.

53623140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893731 (or 893729 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 53623140 is about 7322.7822581311. The cubic root of 53623140 is about 377.0949766219.

Adding to 53623140 its reverse (4132635), we get a palindrome (57755775).

The spelling of 53623140 in words is "fifty-three million, six hundred twenty-three thousand, one hundred forty".