20377001 has 4 divisors (see below), whose sum is σ = 20656212. Its totient is φ = 20097792.

The previous prime is 20376953. The next prime is 20377037. The reversal of 20377001 is 10077302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4734976 + 15642025 = 2176^2 + 3955^2 .

It is a cyclic number.

It is not a de Polignac number, because 20377001 - 2¹⁰ = 20375977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20376001) 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, 139496 + ... + 139641.

It is an arithmetic number, because the mean of its divisors is an integer number (5164053).

Almost surely, 2^20377001 is an apocalyptic number.

It is an amenable number.

20377001 is a deficient number, since it is larger than the sum of its proper divisors (279211).

20377001 is an equidigital number, since it uses as much as digits as its factorization.

20377001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279210.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 20377001 is about 4514.0891661552. The cubic root of 20377001 is about 273.1367194360.

The spelling of 20377001 in words is "twenty million, three hundred seventy-seven thousand, one".