52201890 has 48 divisors (see below), whose sum is σ = 146168568. Its totient is φ = 12849408.

The previous prime is 52201841. The next prime is 52201921. The reversal of 52201890 is 9810225.

It can be written as a sum of positive squares in 4 ways, for example, as 20493729 + 31708161 = 4527^2 + 5631^2 .

It is a Curzon 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 23 ways as a sum of consecutive naturals, for example, 21139 + ... + 23478.

Almost surely, 2^52201890 is an apocalyptic number.

52201890 is an abundant number, since it is smaller than the sum of its proper divisors (93966678).

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

52201890 is a wasteful number, since it uses less digits than its factorization.

52201890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44643 (or 44640 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 52201890 is about 7225.0875427222. The cubic root of 52201890 is about 373.7335410328.

The spelling of 52201890 in words is "fifty-two million, two hundred one thousand, eight hundred ninety".