220504461 has 4 divisors (see below), whose sum is σ = 294005952. Its totient is φ = 147002972.

The previous prime is 220504397. The next prime is 220504463. The reversal of 220504461 is 164405022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220504461 - 2⁶ = 220504397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220504463) 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, 36750741 + ... + 36750746.

It is an arithmetic number, because the mean of its divisors is an integer number (73501488).

Almost surely, 2^220504461 is an apocalyptic number.

It is an amenable number.

220504461 is a deficient number, since it is larger than the sum of its proper divisors (73501491).

220504461 is an equidigital number, since it uses as much as digits as its factorization.

220504461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73501490.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 220504461 is about 14849.3926138411. The cubic root of 220504461 is about 604.1421359352.

Adding to 220504461 its reverse (164405022), we get a palindrome (384909483).

The spelling of 220504461 in words is "two hundred twenty million, five hundred four thousand, four hundred sixty-one".