2155104555 has 16 divisors (see below), whose sum is σ = 3467222304. Its totient is φ = 1143037440.

The previous prime is 2155104551. The next prime is 2155104559. The reversal of 2155104555 is 5554015512.

It is an interprime number because it is at equal distance from previous prime (2155104551) and next prime (2155104559).

It is not a de Polignac number, because 2155104555 - 2² = 2155104551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155104551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394174 + ... + 399603.

It is an arithmetic number, because the mean of its divisors is an integer number (216701394).

Almost surely, 2^2155104555 is an apocalyptic number.

2155104555 is a deficient number, since it is larger than the sum of its proper divisors (1312117749).

2155104555 is a wasteful number, since it uses less digits than its factorization.

2155104555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793966.

The product of its (nonzero) digits is 25000, while the sum is 33.

The square root of 2155104555 is about 46423.1036769409. The cubic root of 2155104555 is about 1291.6835089768.

The spelling of 2155104555 in words is "two billion, one hundred fifty-five million, one hundred four thousand, five hundred fifty-five".