20795537 has 4 divisors (see below), whose sum is σ = 23766336. Its totient is φ = 17824740.

The previous prime is 20795521. The next prime is 20795543. The reversal of 20795537 is 73559702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20795537 - 2⁴ = 20795521 is a prime.

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 20795537.

It is not an unprimeable number, because it can be changed into a prime (20795587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1485389 + ... + 1485402.

It is an arithmetic number, because the mean of its divisors is an integer number (5941584).

Almost surely, 2^20795537 is an apocalyptic number.

It is an amenable number.

20795537 is a deficient number, since it is larger than the sum of its proper divisors (2970799).

20795537 is an equidigital number, since it uses as much as digits as its factorization.

20795537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970798.

The product of its (nonzero) digits is 66150, while the sum is 38.

The square root of 20795537 is about 4560.2123854049. The cubic root of 20795537 is about 274.9941023529.

The spelling of 20795537 in words is "twenty million, seven hundred ninety-five thousand, five hundred thirty-seven".