20575403 has 2 divisors, whose sum is σ = 20575404. Its totient is φ = 20575402.

The previous prime is 20575393. The next prime is 20575433. The reversal of 20575403 is 30457502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20575403 - 2¹² = 20571307 is a prime.

It is a super-2 number, since 2×20575403² = 846694417224818, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20575433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10287701 + 10287702.

It is an arithmetic number, because the mean of its divisors is an integer number (10287702).

Almost surely, 2^20575403 is an apocalyptic number.

20575403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20575403 is an equidigital number, since it uses as much as digits as its factorization.

20575403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 20575403 is about 4536.0117945173. The cubic root of 20575403 is about 274.0203290012.

The spelling of 20575403 in words is "twenty million, five hundred seventy-five thousand, four hundred three".