2155157223 has 8 divisors (see below), whose sum is σ = 2934682368. Its totient is φ = 1406201784.

The previous prime is 2155157183. The next prime is 2155157233. The reversal of 2155157223 is 3227515512.

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

It is not a de Polignac number, because 2155157223 - 2⁶ = 2155157159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155157233) 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, 7642261 + ... + 7642542.

It is an arithmetic number, because the mean of its divisors is an integer number (366835296).

Almost surely, 2^2155157223 is an apocalyptic number.

2155157223 is a deficient number, since it is larger than the sum of its proper divisors (779525145).

2155157223 is a wasteful number, since it uses less digits than its factorization.

2155157223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15284853.

The product of its digits is 21000, while the sum is 33.

The square root of 2155157223 is about 46423.6709341258. The cubic root of 2155157223 is about 1291.6940312556.

The spelling of 2155157223 in words is "two billion, one hundred fifty-five million, one hundred fifty-seven thousand, two hundred twenty-three".