53820858 has 32 divisors (see below), whose sum is σ = 132483456. Its totient is φ = 14194368.

The previous prime is 53820857. The next prime is 53820859. The reversal of 53820858 is 85802835.

It is an interprime number because it is at equal distance from previous prime (53820857) and next prime (53820859).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53820857) 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, 48741 + ... + 49832.

It is an arithmetic number, because the mean of its divisors is an integer number (4140108).

Almost surely, 2^53820858 is an apocalyptic number.

53820858 is an abundant number, since it is smaller than the sum of its proper divisors (78662598).

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

53820858 is a wasteful number, since it uses less digits than its factorization.

53820858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98598.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 53820858 is about 7336.2700331981. The cubic root of 53820858 is about 377.5578801066.

The spelling of 53820858 in words is "fifty-three million, eight hundred twenty thousand, eight hundred fifty-eight".