53820558 has 48 divisors (see below), whose sum is σ = 131478480. Its totient is φ = 16307280.

The previous prime is 53820541. The next prime is 53820581. The reversal of 53820558 is 85502835.

It is a super-3 number, since 3×53820558³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2416 + ... + 10652.

It is an arithmetic number, because the mean of its divisors is an integer number (2739135).

Almost surely, 2^53820558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53820558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65739240).

53820558 is an abundant number, since it is smaller than the sum of its proper divisors (77657922).

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

53820558 is a wasteful number, since it uses less digits than its factorization.

53820558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8270 (or 8253 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 53820558 is about 7336.2495868121. The cubic root of 53820558 is about 377.5571785968.

The spelling of 53820558 in words is "fifty-three million, eight hundred twenty thousand, five hundred fifty-eight".