20371061 has 4 divisors (see below), whose sum is σ = 21028224. Its totient is φ = 19713900.

The previous prime is 20371051. The next prime is 20371073. The reversal of 20371061 is 16017302.

It is a happy number.

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 20371061 - 2¹⁸ = 20108917 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 (20371051) 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, 328535 + ... + 328596.

It is an arithmetic number, because the mean of its divisors is an integer number (5257056).

Almost surely, 2^20371061 is an apocalyptic number.

It is an amenable number.

20371061 is a deficient number, since it is larger than the sum of its proper divisors (657163).

20371061 is an equidigital number, since it uses as much as digits as its factorization.

20371061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657162.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 20371061 is about 4513.4311781615. The cubic root of 20371061 is about 273.1101766065.

Adding to 20371061 its reverse (16017302), we get a palindrome (36388363).

The spelling of 20371061 in words is "twenty million, three hundred seventy-one thousand, sixty-one".