20513041 has 8 divisors (see below), whose sum is σ = 21228800. Its totient is φ = 19800720.

The previous prime is 20513039. The next prime is 20513057. The reversal of 20513041 is 14031502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20513041 - 2¹ = 20513039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20513011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18655 + ... + 19723.

It is an arithmetic number, because the mean of its divisors is an integer number (2653600).

Almost surely, 2^20513041 is an apocalyptic number.

It is an amenable number.

20513041 is a deficient number, since it is larger than the sum of its proper divisors (715759).

20513041 is a wasteful number, since it uses less digits than its factorization.

20513041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20513041 is about 4529.1324776385. The cubic root of 20513041 is about 273.7432060476.

Adding to 20513041 its reverse (14031502), we get a palindrome (34544543).

The spelling of 20513041 in words is "twenty million, five hundred thirteen thousand, forty-one".