53667820 has 24 divisors (see below), whose sum is σ = 116339328. Its totient is φ = 20774400.

The previous prime is 53667751. The next prime is 53667833. The reversal of 53667820 is 2876635.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 53667820.

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, 42661 + ... + 43900.

It is an arithmetic number, because the mean of its divisors is an integer number (4847472).

Almost surely, 2^53667820 is an apocalyptic number.

It is an amenable number.

53667820 is an abundant number, since it is smaller than the sum of its proper divisors (62671508).

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

53667820 is a wasteful number, since it uses less digits than its factorization.

53667820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86601 (or 86599 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 53667820 is about 7325.8323759147. The cubic root of 53667820 is about 377.1996822035.

The spelling of 53667820 in words is "fifty-three million, six hundred sixty-seven thousand, eight hundred twenty".