221453413 has 8 divisors (see below), whose sum is σ = 223284600. Its totient is φ = 219629760.

The previous prime is 221453389. The next prime is 221453437. The reversal of 221453413 is 314354122.

221453413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221453389) and next prime (221453437).

It can be written as a sum of positive squares in 4 ways, for example, as 152596609 + 68856804 = 12353^2 + 8298^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221453413 - 2¹³ = 221445221 is a prime.

It is a super-2 number, since 2×221453413² = 98083228258697138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221253413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67143 + ... + 70363.

It is an arithmetic number, because the mean of its divisors is an integer number (27910575).

Almost surely, 2^221453413 is an apocalyptic number.

It is an amenable number.

221453413 is a deficient number, since it is larger than the sum of its proper divisors (1831187).

221453413 is a wasteful number, since it uses less digits than its factorization.

221453413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767.

The product of its digits is 2880, while the sum is 25.

The square root of 221453413 is about 14881.3108629583. The cubic root of 221453413 is about 605.0075476599.

The spelling of 221453413 in words is "two hundred twenty-one million, four hundred fifty-three thousand, four hundred thirteen".