52221751 has 2 divisors, whose sum is σ = 52221752. Its totient is φ = 52221750.

The previous prime is 52221733. The next prime is 52221769. The reversal of 52221751 is 15712225.

It is a balanced prime because it is at equal distance from previous prime (52221733) and next prime (52221769).

It is a cyclic number.

It is not a de Polignac number, because 52221751 - 2⁷ = 52221623 is a prime.

It is a super-2 number, since 2×52221751² = 5454222555012002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52221731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26110875 + 26110876.

It is an arithmetic number, because the mean of its divisors is an integer number (26110876).

Almost surely, 2^52221751 is an apocalyptic number.

52221751 is a deficient number, since it is larger than the sum of its proper divisors (1).

52221751 is an equidigital number, since it uses as much as digits as its factorization.

52221751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1400, while the sum is 25.

The square root of 52221751 is about 7226.4618590289. The cubic root of 52221751 is about 373.7809325525.

Adding to 52221751 its reverse (15712225), we get a palindrome (67933976).

The spelling of 52221751 in words is "fifty-two million, two hundred twenty-one thousand, seven hundred fifty-one".