3502272421 has 2 divisors, whose sum is σ = 3502272422. Its totient is φ = 3502272420.

The previous prime is 3502272379. The next prime is 3502272427. The reversal of 3502272421 is 1242722053.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3125369025 + 376903396 = 55905^2 + 19414^2 .

It is a cyclic number.

It is not a de Polignac number, because 3502272421 - 2⁹ = 3502271909 is a prime.

It is a super-2 number, since 2×3502272421² = 24531824221794402482, 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 3502272421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3502272427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1751136210 + 1751136211.

It is an arithmetic number, because the mean of its divisors is an integer number (1751136211).

Almost surely, 2^3502272421 is an apocalyptic number.

It is an amenable number.

3502272421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3502272421 is an equidigital number, since it uses as much as digits as its factorization.

3502272421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 3502272421 is about 59180.0001774248. Note that the first 3 decimals coincide. The cubic root of 3502272421 is about 1518.6230057327.

Adding to 3502272421 its reverse (1242722053), we get a palindrome (4744994474).

The spelling of 3502272421 in words is "three billion, five hundred two million, two hundred seventy-two thousand, four hundred twenty-one".