20517483 has 8 divisors (see below), whose sum is σ = 31264768. Its totient is φ = 11724264.

The previous prime is 20517481. The next prime is 20517491. The reversal of 20517483 is 38471502.

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

It is not a de Polignac number, because 20517483 - 2¹ = 20517481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20517483.

It is not an unprimeable number, because it can be changed into a prime (20517481) 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, 488491 + ... + 488532.

It is an arithmetic number, because the mean of its divisors is an integer number (3908096).

Almost surely, 2^20517483 is an apocalyptic number.

20517483 is a deficient number, since it is larger than the sum of its proper divisors (10747285).

20517483 is an equidigital number, since it uses as much as digits as its factorization.

20517483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977033.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 20517483 is about 4529.6228319806. The cubic root of 20517483 is about 273.7629638780.

Adding to 20517483 its reverse (38471502), we get a palindrome (58988985).

The spelling of 20517483 in words is "twenty million, five hundred seventeen thousand, four hundred eighty-three".