3572272421 has 2 divisors, whose sum is σ = 3572272422. Its totient is φ = 3572272420.

The previous prime is 3572272381. The next prime is 3572272541. The reversal of 3572272421 is 1242722753.

3572272421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1981140100 + 1591132321 = 44510^2 + 39889^2 .

It is a cyclic number.

It is not a de Polignac number, because 3572272421 - 2⁶ = 3572272357 is a prime.

It is a super-2 number, since 2×3572272421² = 25522260499674402482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3572202421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1786136210 + 1786136211.

It is an arithmetic number, because the mean of its divisors is an integer number (1786136211).

Almost surely, 2^3572272421 is an apocalyptic number.

It is an amenable number.

3572272421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3572272421 is an equidigital number, since it uses as much as digits as its factorization.

3572272421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 35.

The square root of 3572272421 is about 59768.4902017777. The cubic root of 3572272421 is about 1528.6739219809.

The spelling of 3572272421 in words is "three billion, five hundred seventy-two million, two hundred seventy-two thousand, four hundred twenty-one".