52355646 has 80 divisors (see below), whose sum is σ = 135454176. Its totient is φ = 14805504.

The previous prime is 52355627. The next prime is 52355651. The reversal of 52355646 is 64655325.

It is a happy number.

52355646 is a `hidden beast` number, since 5 + 2 + 3 + 5 + 5 + 646 = 666.

It is a super-2 number, since 2×52355646² = 5482227336154632, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 52355646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 155190 + ... + 155526.

Almost surely, 2^52355646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52355646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67727088).

52355646 is an abundant number, since it is smaller than the sum of its proper divisors (83098530).

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

52355646 is a wasteful number, since it uses less digits than its factorization.

52355646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 486 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 52355646 is about 7235.7201438419. The cubic root of 52355646 is about 374.1001142758.

It can be divided in two parts, 523 and 55646, that added together give a square (56169 = 237²).

The spelling of 52355646 in words is "fifty-two million, three hundred fifty-five thousand, six hundred forty-six".