52071890 has 32 divisors (see below), whose sum is σ = 101542896. Its totient is φ = 19111680.

The previous prime is 52071889. The next prime is 52071893. The reversal of 52071890 is 9817025.

52071890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 13271449 + 38800441 = 3643^2 + 6229^2 .

It is a super-2 number, since 2×52071890² = 5422963456344200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52071893) 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, 22424 + ... + 24636.

Almost surely, 2^52071890 is an apocalyptic number.

52071890 is a deficient number, since it is larger than the sum of its proper divisors (49471006).

52071890 is a wasteful number, since it uses less digits than its factorization.

52071890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 52071890 is about 7216.0855039280. The cubic root of 52071890 is about 373.4230430320.

The spelling of 52071890 in words is "fifty-two million, seventy-one thousand, eight hundred ninety".