52246821 has 16 divisors (see below), whose sum is σ = 76174848. Its totient is φ = 31590000.

The previous prime is 52246813. The next prime is 52246847. The reversal of 52246821 is 12864225.

52246821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52246821 - 2³ = 52246813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52246891) 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, 14446 + ... + 17696.

It is an arithmetic number, because the mean of its divisors is an integer number (4760928).

Almost surely, 2^52246821 is an apocalyptic number.

It is an amenable number.

52246821 is a deficient number, since it is larger than the sum of its proper divisors (23928027).

52246821 is a wasteful number, since it uses less digits than its factorization.

52246821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752.

The product of its digits is 7680, while the sum is 30.

The square root of 52246821 is about 7228.1962480276. The cubic root of 52246821 is about 373.8407364252.

The spelling of 52246821 in words is "fifty-two million, two hundred forty-six thousand, eight hundred twenty-one".