52056990 has 96 divisors (see below), whose sum is σ = 140343840. Its totient is φ = 13381632.

The previous prime is 52056989. The next prime is 52057021. The reversal of 52056990 is 9965025.

52056990 is a `hidden beast` number, since 5 + 2 + 0 + 569 + 90 = 666.

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 47 ways as a sum of consecutive naturals, for example, 536622 + ... + 536718.

It is an arithmetic number, because the mean of its divisors is an integer number (1461915).

Almost surely, 2^52056990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52056990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70171920).

52056990 is an abundant number, since it is smaller than the sum of its proper divisors (88286850).

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

52056990 is a wasteful number, since it uses less digits than its factorization.

52056990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 52056990 is about 7215.0530143582. The cubic root of 52056990 is about 373.3874221873.

The spelling of 52056990 in words is "fifty-two million, fifty-six thousand, nine hundred ninety".