2155552415 has 8 divisors (see below), whose sum is σ = 2590984800. Its totient is φ = 1721560672.

The previous prime is 2155552411. The next prime is 2155552423. The reversal of 2155552415 is 5142555512.

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 2155552415 - 2² = 2155552411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155552411) 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 7 ways as a sum of consecutive naturals, for example, 356864 + ... + 362853.

It is an arithmetic number, because the mean of its divisors is an integer number (323873100).

Almost surely, 2^2155552415 is an apocalyptic number.

2155552415 is a deficient number, since it is larger than the sum of its proper divisors (435432385).

2155552415 is an equidigital number, since it uses as much as digits as its factorization.

2155552415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720321.

The product of its digits is 50000, while the sum is 35.

The square root of 2155552415 is about 46427.9271021225. The cubic root of 2155552415 is about 1291.7729792389.

The spelling of 2155552415 in words is "two billion, one hundred fifty-five million, five hundred fifty-two thousand, four hundred fifteen".