52221031 has 2 divisors, whose sum is σ = 52221032. Its totient is φ = 52221030.

The previous prime is 52221011. The next prime is 52221041. The reversal of 52221031 is 13012225.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52221031 - 2⁵ = 52220999 is a prime.

It is a super-2 number, since 2×52221031² = 5454072157405922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52220996 and 52221014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52221011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26110515 + 26110516.

It is an arithmetic number, because the mean of its divisors is an integer number (26110516).

Almost surely, 2^52221031 is an apocalyptic number.

52221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

52221031 is an equidigital number, since it uses as much as digits as its factorization.

52221031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 52221031 is about 7226.4120419472. The cubic root of 52221031 is about 373.7792147273.

Adding to 52221031 its reverse (13012225), we get a palindrome (65233256).

The spelling of 52221031 in words is "fifty-two million, two hundred twenty-one thousand, thirty-one".