52208390 has 64 divisors (see below), whose sum is σ = 111283200. Its totient is φ = 17449344.

The previous prime is 52208389. The next prime is 52208417. The reversal of 52208390 is 9380225.

52208390 = 1998² + 1999² + ... + 2010².

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56351 + ... + 57269.

It is an arithmetic number, because the mean of its divisors is an integer number (1738800).

Almost surely, 2^52208390 is an apocalyptic number.

52208390 is an abundant number, since it is smaller than the sum of its proper divisors (59074810).

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

52208390 is a wasteful number, since it uses less digits than its factorization.

52208390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 52208390 is about 7225.5373502598. The cubic root of 52208390 is about 373.7490523945.

The spelling of 52208390 in words is "fifty-two million, two hundred eight thousand, three hundred ninety".