20603051 has 8 divisors (see below), whose sum is σ = 23581440. Its totient is φ = 17633448.

The previous prime is 20603047. The next prime is 20603053. The reversal of 20603051 is 15030602.

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

It is not a de Polignac number, because 20603051 - 2² = 20603047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20603053) 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, 4010 + ... + 7568.

It is an arithmetic number, because the mean of its divisors is an integer number (2947680).

Almost surely, 2^20603051 is an apocalyptic number.

20603051 is a deficient number, since it is larger than the sum of its proper divisors (2978389).

20603051 is an equidigital number, since it uses as much as digits as its factorization.

20603051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4393.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20603051 is about 4539.0583825283. The cubic root of 20603051 is about 274.1430114608.

Adding to 20603051 its reverse (15030602), we get a palindrome (35633653).

The spelling of 20603051 in words is "twenty million, six hundred three thousand, fifty-one".