20935045 has 4 divisors (see below), whose sum is σ = 25122060. Its totient is φ = 16748032.

The previous prime is 20935043. The next prime is 20935049. The reversal of 20935045 is 54053902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9108324 + 11826721 = 3018^2 + 3439^2 .

It is a cyclic number.

It is not a de Polignac number, because 20935045 - 2¹ = 20935043 is a prime.

It is a super-2 number, since 2×20935045² = 876552218304050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20935043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2093500 + ... + 2093509.

It is an arithmetic number, because the mean of its divisors is an integer number (6280515).

Almost surely, 2^20935045 is an apocalyptic number.

It is an amenable number.

20935045 is a deficient number, since it is larger than the sum of its proper divisors (4187015).

20935045 is an equidigital number, since it uses as much as digits as its factorization.

20935045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187014.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 20935045 is about 4575.4830346096. The cubic root of 20935045 is about 275.6076700111.

Adding to 20935045 its reverse (54053902), we get a palindrome (74988947).

The spelling of 20935045 in words is "twenty million, nine hundred thirty-five thousand, forty-five".