3129055 has 4 divisors (see below), whose sum is σ = 3754872. Its totient is φ = 2503240.

The previous prime is 3129043. The next prime is 3129059. The reversal of 3129055 is 5509213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5509213 = 23 ⋅239531.

It is not a de Polignac number, because 3129055 - 2⁵ = 3129023 is a prime.

It is an Ulam number.

It is a Duffinian number.

3129055 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312901 + ... + 312910.

It is an arithmetic number, because the mean of its divisors is an integer number (938718).

Almost surely, 2^3129055 is an apocalyptic number.

3129055 is a deficient number, since it is larger than the sum of its proper divisors (625817).

3129055 is an equidigital number, since it uses as much as digits as its factorization.

3129055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625816.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 3129055 is about 1768.9135083435. The cubic root of 3129055 is about 146.2640963353.

The spelling of 3129055 in words is "three million, one hundred twenty-nine thousand, fifty-five".