20575937 has 2 divisors, whose sum is σ = 20575938. Its totient is φ = 20575936.

The previous prime is 20575897. The next prime is 20575963. The reversal of 20575937 is 73957502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14205361 + 6370576 = 3769^2 + 2524^2 .

It is a cyclic number.

It is not a de Polignac number, because 20575937 - 2⁶ = 20575873 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20575937.

It is not a weakly prime, because it can be changed into another prime (20575337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10287968 + 10287969.

It is an arithmetic number, because the mean of its divisors is an integer number (10287969).

Almost surely, 2^20575937 is an apocalyptic number.

It is an amenable number.

20575937 is a deficient number, since it is larger than the sum of its proper divisors (1).

20575937 is an equidigital number, since it uses as much as digits as its factorization.

20575937 is an evil number, because the sum of its binary digits is even.

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

The square root of 20575937 is about 4536.0706564162. The cubic root of 20575937 is about 274.0226995597.

It can be divided in two parts, 20575 and 937, that added together give a palindrome (21512).

The spelling of 20575937 in words is "twenty million, five hundred seventy-five thousand, nine hundred thirty-seven".