52221469 has 2 divisors, whose sum is σ = 52221470. Its totient is φ = 52221468.

The previous prime is 52221461. The next prime is 52221487. The reversal of 52221469 is 96412225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48372025 + 3849444 = 6955^2 + 1962^2 .

It is a cyclic number.

It is not a de Polignac number, because 52221469 - 2³ = 52221461 is a prime.

It is a super-2 number, since 2×52221469² = 5454163649035922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52221469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52221461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26110734 + 26110735.

It is an arithmetic number, because the mean of its divisors is an integer number (26110735).

Almost surely, 2^52221469 is an apocalyptic number.

It is an amenable number.

52221469 is a deficient number, since it is larger than the sum of its proper divisors (1).

52221469 is an equidigital number, since it uses as much as digits as its factorization.

52221469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 52221469 is about 7226.4423473795. The cubic root of 52221469 is about 373.7802597395.

The spelling of 52221469 in words is "fifty-two million, two hundred twenty-one thousand, four hundred sixty-nine".