2109537 has 32 divisors (see below), whose sum is σ = 3379200. Its totient is φ = 1297296.

The previous prime is 2109533. The next prime is 2109553. The reversal of 2109537 is 7359012.

It is not a de Polignac number, because 2109537 - 2² = 2109533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2109537.

It is not an unprimeable number, because it can be changed into a prime (2109533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26664 + ... + 26742.

It is an arithmetic number, because the mean of its divisors is an integer number (105600).

2^2109537 is an apocalyptic number.

2109537 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2109537 is a deficient number, since it is larger than the sum of its proper divisors (1269663).

2109537 is a wasteful number, since it uses less digits than its factorization.

2109537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 2109537 is about 1452.4245247172. The cubic root of 2109537 is about 128.2514790705.

The spelling of 2109537 in words is "two million, one hundred nine thousand, five hundred thirty-seven".