20214461 has 4 divisors (see below), whose sum is σ = 21278400. Its totient is φ = 19150524.

The previous prime is 20214451. The next prime is 20214497. The reversal of 20214461 is 16441202.

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 20214461 - 2¹⁰ = 20213437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20214451) 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, 531941 + ... + 531978.

It is an arithmetic number, because the mean of its divisors is an integer number (5319600).

Almost surely, 2^20214461 is an apocalyptic number.

It is an amenable number.

20214461 is a deficient number, since it is larger than the sum of its proper divisors (1063939).

20214461 is a wasteful number, since it uses less digits than its factorization.

20214461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063938.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20214461 is about 4496.0494881618. The cubic root of 20214461 is about 272.4085420991.

Adding to 20214461 its reverse (16441202), we get a palindrome (36655663).

The spelling of 20214461 in words is "twenty million, two hundred fourteen thousand, four hundred sixty-one".