52121646 has 12 divisors (see below), whose sum is σ = 112930272. Its totient is φ = 17373876.

The previous prime is 52121639. The next prime is 52121647. The reversal of 52121646 is 64612125.

52121646 is a `hidden beast` number, since 5 + 2 + 12 + 1 + 646 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52121647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1447806 + ... + 1447841.

It is an arithmetic number, because the mean of its divisors is an integer number (9410856).

Almost surely, 2^52121646 is an apocalyptic number.

52121646 is an abundant number, since it is smaller than the sum of its proper divisors (60808626).

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

52121646 is a wasteful number, since it uses less digits than its factorization.

52121646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895655 (or 2895652 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 52121646 is about 7219.5322563169. The cubic root of 52121646 is about 373.5419435378.

The spelling of 52121646 in words is "fifty-two million, one hundred twenty-one thousand, six hundred forty-six".