2109501 has 12 divisors (see below), whose sum is σ = 3112512. Its totient is φ = 1376136.

The previous prime is 2109461. The next prime is 2109509. The reversal of 2109501 is 1059012.

It is not a de Polignac number, because 2109501 - 2¹⁷ = 1978429 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109509) 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, 2071 + ... + 2916.

It is an arithmetic number, because the mean of its divisors is an integer number (259376).

2^2109501 is an apocalyptic number.

It is an amenable number.

2109501 is a deficient number, since it is larger than the sum of its proper divisors (1003011).

2109501 is a wasteful number, since it uses less digits than its factorization.

2109501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040 (or 5037 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 2109501 is about 1452.4121315935. The cubic root of 2109501 is about 128.2507495140.

The spelling of 2109501 in words is "two million, one hundred nine thousand, five hundred one".