2136537 has 20 divisors (see below), whose sum is σ = 3438820. Its totient is φ = 1314144.

The previous prime is 2136527. The next prime is 2136553. The reversal of 2136537 is 7356312.

It is a happy number.

2136537 is a `hidden beast` number, since 2 + 1 + 3 + 653 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1390041 + 746496 = 1179^2 + 864^2 .

It is not a de Polignac number, because 2136537 - 2⁶ = 2136473 is a prime.

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

It is a d-powerful number, because it can be written as 2²¹ + 1 + 3⁹ + 6 + 5 + 3⁹ + 7 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2136537.

It is not an unprimeable number, because it can be changed into a prime (2136527) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39 + ... + 2067.

It is an arithmetic number, because the mean of its divisors is an integer number (171941).

2^2136537 is an apocalyptic number.

2136537 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2136537 is a deficient number, since it is larger than the sum of its proper divisors (1302283).

2136537 is a wasteful number, since it uses less digits than its factorization.

2136537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054 (or 2045 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 2136537 is about 1461.6897755680. The cubic root of 2136537 is about 128.7963254292.

The spelling of 2136537 in words is "two million, one hundred thirty-six thousand, five hundred thirty-seven".