220044137 has 4 divisors (see below), whose sum is σ = 221776896. Its totient is φ = 218311380.

The previous prime is 220044127. The next prime is 220044157. The reversal of 220044137 is 731440022.

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 220044137 - 2⁸ = 220043881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220044127) 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, 866189 + ... + 866442.

It is an arithmetic number, because the mean of its divisors is an integer number (55444224).

Almost surely, 2^220044137 is an apocalyptic number.

It is an amenable number.

220044137 is a deficient number, since it is larger than the sum of its proper divisors (1732759).

220044137 is a wasteful number, since it uses less digits than its factorization.

220044137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732758.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 220044137 is about 14833.8847575408. The cubic root of 220044137 is about 603.7214416948.

Adding to 220044137 its reverse (731440022), we get a palindrome (951484159).

The spelling of 220044137 in words is "two hundred twenty million, forty-four thousand, one hundred thirty-seven".