53804140 has 24 divisors (see below), whose sum is σ = 121680720. Its totient is φ = 19866048.

The previous prime is 53804129. The next prime is 53804161. The reversal of 53804140 is 4140835.

It is a super-2 number, since 2×53804140² = 5789770962279200, which contains 22 as substring.

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, 103210 + ... + 103729.

It is an arithmetic number, because the mean of its divisors is an integer number (5070030).

Almost surely, 2^53804140 is an apocalyptic number.

It is an amenable number.

53804140 is an abundant number, since it is smaller than the sum of its proper divisors (67876580).

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

53804140 is a wasteful number, since it uses less digits than its factorization.

53804140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206961 (or 206959 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 53804140 is about 7335.1305373524. The cubic root of 53804140 is about 377.5187833292.

Adding to 53804140 its reverse (4140835), we get a palindrome (57944975).

The spelling of 53804140 in words is "fifty-three million, eight hundred four thousand, one hundred forty".