20952593 has 2 divisors, whose sum is σ = 20952594. Its totient is φ = 20952592.

The previous prime is 20952583. The next prime is 20952623. The reversal of 20952593 is 39525902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20729809 + 222784 = 4553^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 20952593 - 2⁴ = 20952577 is a prime.

It is a super-2 number, since 2×20952593² = 878022306847298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20952583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10476296 + 10476297.

It is an arithmetic number, because the mean of its divisors is an integer number (10476297).

Almost surely, 2^20952593 is an apocalyptic number.

It is an amenable number.

20952593 is a deficient number, since it is larger than the sum of its proper divisors (1).

20952593 is an equidigital number, since it uses as much as digits as its factorization.

20952593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 20952593 is about 4577.4002446804. The cubic root of 20952593 is about 275.6846543647.

The spelling of 20952593 in words is "twenty million, nine hundred fifty-two thousand, five hundred ninety-three".