2147955 has 8 divisors (see below), whose sum is σ = 3436752. Its totient is φ = 1145568.

The previous prime is 2147941. The next prime is 2147987. The reversal of 2147955 is 5597412.

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

It is not a de Polignac number, because 2147955 - 2⁵ = 2147923 is a prime.

It is a super-2 number, since 2×2147955² = 9227421364050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

2147955 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71584 + ... + 71613.

It is an arithmetic number, because the mean of its divisors is an integer number (429594).

2^2147955 is an apocalyptic number.

2147955 is a deficient number, since it is larger than the sum of its proper divisors (1288797).

2147955 is a wasteful number, since it uses less digits than its factorization.

2147955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143205.

The product of its digits is 12600, while the sum is 33.

The square root of 2147955 is about 1465.5903247497. The cubic root of 2147955 is about 129.0253540694.

The spelling of 2147955 in words is "two million, one hundred forty-seven thousand, nine hundred fifty-five".