2155422415 has 8 divisors (see below), whose sum is σ = 2722638960. Its totient is φ = 1633583232.

The previous prime is 2155422413. The next prime is 2155422421. The reversal of 2155422415 is 5142245512.

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

It is a cyclic number.

It is not a de Polignac number, because 2155422415 - 2¹ = 2155422413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155422413) 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, 11344234 + ... + 11344423.

It is an arithmetic number, because the mean of its divisors is an integer number (340329870).

Almost surely, 2^2155422415 is an apocalyptic number.

2155422415 is a deficient number, since it is larger than the sum of its proper divisors (567216545).

2155422415 is a wasteful number, since it uses less digits than its factorization.

2155422415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22688681.

The product of its digits is 16000, while the sum is 31.

The square root of 2155422415 is about 46426.5270615841. The cubic root of 2155422415 is about 1291.7470100469.

Adding to 2155422415 its reverse (5142245512), we get a palindrome (7297667927).

The spelling of 2155422415 in words is "two billion, one hundred fifty-five million, four hundred twenty-two thousand, four hundred fifteen".