2150505 has 24 divisors (see below), whose sum is σ = 4260672. Its totient is φ = 982944.

The previous prime is 2150471. The next prime is 2150509. The reversal of 2150505 is 5050512.

It is not a de Polignac number, because 2150505 - 2⁶ = 2150441 is a prime.

It is an Ulam number.

2150505 is a modest number, since divided by 505 gives 215 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2150509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3099 + ... + 3728.

It is an arithmetic number, because the mean of its divisors is an integer number (177528).

2^2150505 is an apocalyptic number.

It is an amenable number.

2150505 is a deficient number, since it is larger than the sum of its proper divisors (2110167).

2150505 is a wasteful number, since it uses less digits than its factorization.

2150505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6845 (or 6842 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 2150505 is about 1466.4600233215. The cubic root of 2150505 is about 129.0763924663.

The spelling of 2150505 in words is "two million, one hundred fifty thousand, five hundred five".