220355453 has 4 divisors (see below), whose sum is σ = 220385340. Its totient is φ = 220325568.

The previous prime is 220355441. The next prime is 220355477. The reversal of 220355453 is 354553022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 354553022 = 2 ⋅177276511.

It can be written as a sum of positive squares in 2 ways, for example, as 219839929 + 515524 = 14827^2 + 718^2 .

It is a cyclic number.

It is not a de Polignac number, because 220355453 - 2⁶ = 220355389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220355153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4901 + ... + 21557.

It is an arithmetic number, because the mean of its divisors is an integer number (55096335).

Almost surely, 2^220355453 is an apocalyptic number.

It is an amenable number.

220355453 is a deficient number, since it is larger than the sum of its proper divisors (29887).

220355453 is a wasteful number, since it uses less digits than its factorization.

220355453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29886.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 220355453 is about 14844.3744563387. The cubic root of 220355453 is about 604.0060203265.

The spelling of 220355453 in words is "two hundred twenty million, three hundred fifty-five thousand, four hundred fifty-three".