20454101 has 4 divisors (see below), whose sum is σ = 20467104. Its totient is φ = 20441100.

The previous prime is 20454097. The next prime is 20454103. The reversal of 20454101 is 10145402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20454101 - 2² = 20454097 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 20454101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454103) 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, 3755 + ... + 7416.

It is an arithmetic number, because the mean of its divisors is an integer number (5116776).

Almost surely, 2^20454101 is an apocalyptic number.

It is an amenable number.

20454101 is a deficient number, since it is larger than the sum of its proper divisors (13003).

20454101 is a wasteful number, since it uses less digits than its factorization.

20454101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13002.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20454101 is about 4522.6210321007. The cubic root of 20454101 is about 273.4807729566.

Adding to 20454101 its reverse (10145402), we get a palindrome (30599503).

The spelling of 20454101 in words is "twenty million, four hundred fifty-four thousand, one hundred one".