53859820 has 36 divisors (see below), whose sum is σ = 131574240. Its totient is φ = 18465888.

The previous prime is 53859797. The next prime is 53859821. The reversal of 53859820 is 2895835.

It is not an unprimeable number, because it can be changed into a prime (53859821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26500 + ... + 28459.

It is an arithmetic number, because the mean of its divisors is an integer number (3654840).

Almost surely, 2^53859820 is an apocalyptic number.

It is an amenable number.

53859820 is an abundant number, since it is smaller than the sum of its proper divisors (77714420).

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

53859820 is a wasteful number, since it uses less digits than its factorization.

53859820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54982 (or 54973 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 53859820 is about 7338.9249893973. The cubic root of 53859820 is about 377.6489653746.

The spelling of 53859820 in words is "fifty-three million, eight hundred fifty-nine thousand, eight hundred twenty".