53818790 has 32 divisors (see below), whose sum is σ = 100859904. Its totient is φ = 20653920.

The previous prime is 53818789. The next prime is 53818799. The reversal of 53818790 is 9781835.

Added to its reverse (9781835) it gives a square (63600625 = 7975²).

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53818799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38687 + ... + 40053.

It is an arithmetic number, because the mean of its divisors is an integer number (3151872).

Almost surely, 2^53818790 is an apocalyptic number.

53818790 is a deficient number, since it is larger than the sum of its proper divisors (47041114).

53818790 is a wasteful number, since it uses less digits than its factorization.

53818790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 53818790 is about 7336.1290882863. The cubic root of 53818790 is about 377.5530443129.

Adding to 53818790 its reverse (9781835), we get a square (63600625 = 7975²).

The spelling of 53818790 in words is "fifty-three million, eight hundred eighteen thousand, seven hundred ninety".