1655154223 has 4 divisors (see below), whose sum is σ = 1655362240. Its totient is φ = 1654946208.

The previous prime is 1655154203. The next prime is 1655154251. The reversal of 1655154223 is 3224515561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1655154223 - 2²¹ = 1653057071 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 (1655154203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91578 + ... + 108151.

It is an arithmetic number, because the mean of its divisors is an integer number (413840560).

Almost surely, 2^1655154223 is an apocalyptic number.

1655154223 is a deficient number, since it is larger than the sum of its proper divisors (208017).

1655154223 is an equidigital number, since it uses as much as digits as its factorization.

1655154223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208016.

The product of its digits is 36000, while the sum is 34.

The square root of 1655154223 is about 40683.5866535880. The cubic root of 1655154223 is about 1182.8948894420.

Adding to 1655154223 its reverse (3224515561), we get a palindrome (4879669784).

The spelling of 1655154223 in words is "one billion, six hundred fifty-five million, one hundred fifty-four thousand, two hundred twenty-three".