2155347 has 12 divisors (see below), whose sum is σ = 3158064. Its totient is φ = 1416240.

The previous prime is 2155333. The next prime is 2155381. The reversal of 2155347 is 7435512.

It is a happy number.

It is not a de Polignac number, because 2155347 - 2¹¹ = 2153299 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

2155347 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2155347.

It is not an unprimeable number, because it can be changed into a prime (2155327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1048 + ... + 2325.

It is an arithmetic number, because the mean of its divisors is an integer number (263172).

2^2155347 is an apocalyptic number.

2155347 is a deficient number, since it is larger than the sum of its proper divisors (1002717).

2155347 is a wasteful number, since it uses less digits than its factorization.

2155347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450 (or 3447 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 2155347 is about 1468.1100095020. The cubic root of 2155347 is about 129.1731944441.

The spelling of 2155347 in words is "two million, one hundred fifty-five thousand, three hundred forty-seven".