2155059 has 8 divisors (see below), whose sum is σ = 3192720. Its totient is φ = 1436688.

The previous prime is 2155057. The next prime is 2155067. The reversal of 2155059 is 9505512.

It is not a de Polignac number, because 2155059 - 2¹ = 2155057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 79817 = 2155059 / (2 + 1 + 5 + 5 + 0 + 5 + 9).

It is not an unprimeable number, because it can be changed into a prime (2155057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39882 + ... + 39935.

It is an arithmetic number, because the mean of its divisors is an integer number (399090).

2^2155059 is an apocalyptic number.

2155059 is a deficient number, since it is larger than the sum of its proper divisors (1037661).

2155059 is an equidigital number, since it uses as much as digits as its factorization.

2155059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79826 (or 79820 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 2155059 is about 1468.0119209325. The cubic root of 2155059 is about 129.1674407631.

It can be divided in two parts, 21550 and 59, that added together give a square (21609 = 147²).

The spelling of 2155059 in words is "two million, one hundred fifty-five thousand, fifty-nine".