2155070 has 8 divisors (see below), whose sum is σ = 3879144. Its totient is φ = 862024.

The previous prime is 2155067. The next prime is 2155079. The reversal of 2155070 is 705512.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155079) 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, 107744 + ... + 107763.

It is an arithmetic number, because the mean of its divisors is an integer number (484893).

2^2155070 is an apocalyptic number.

2155070 is a deficient number, since it is larger than the sum of its proper divisors (1724074).

2155070 is a wasteful number, since it uses less digits than its factorization.

2155070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215514.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 2155070 is about 1468.0156674913. The cubic root of 2155070 is about 129.1676605311.

The spelling of 2155070 in words is "two million, one hundred fifty-five thousand, seventy".