53320290 has 32 divisors (see below), whose sum is σ = 129776256. Its totient is φ = 14017920.

The previous prime is 53320273. The next prime is 53320291. The reversal of 53320290 is 9202335.

53320290 = T₄₅ + T₄₆ + ... + T₆₈₃.

53320290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 53320290.

It is not an unprimeable number, because it can be changed into a prime (53320291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10387 + ... + 14646.

It is an arithmetic number, because the mean of its divisors is an integer number (4055508).

Almost surely, 2^53320290 is an apocalyptic number.

53320290 is an abundant number, since it is smaller than the sum of its proper divisors (76455966).

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

53320290 is a wasteful number, since it uses less digits than its factorization.

53320290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25114.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 53320290 is about 7302.0743628095. The cubic root of 53320290 is about 376.3837234340.

The spelling of 53320290 in words is "fifty-three million, three hundred twenty thousand, two hundred ninety".