52021831 has 2 divisors, whose sum is σ = 52021832. Its totient is φ = 52021830.

The previous prime is 52021789. The next prime is 52021841. The reversal of 52021831 is 13812025.

52021831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52021831 - 2⁷ = 52021703 is a prime.

It is a super-2 number, since 2×52021831² = 5412541801185122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52021841) 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 as a sum of consecutive naturals, namely, 26010915 + 26010916.

It is an arithmetic number, because the mean of its divisors is an integer number (26010916).

Almost surely, 2^52021831 is an apocalyptic number.

52021831 is a deficient number, since it is larger than the sum of its proper divisors (1).

52021831 is an equidigital number, since it uses as much as digits as its factorization.

52021831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 52021831 is about 7212.6160995855. The cubic root of 52021831 is about 373.3033419962.

Adding to 52021831 its reverse (13812025), we get a palindrome (65833856).

The spelling of 52021831 in words is "fifty-two million, twenty-one thousand, eight hundred thirty-one".