20573107 has 4 divisors (see below), whose sum is σ = 20653416. Its totient is φ = 20492800.

The previous prime is 20573089. The next prime is 20573141. The reversal of 20573107 is 70137502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70137502 = 2 ⋅35068751.

It is a cyclic number.

It is not a de Polignac number, because 20573107 - 2¹⁵ = 20540339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20553107) 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, 39769 + ... + 40282.

It is an arithmetic number, because the mean of its divisors is an integer number (5163354).

Almost surely, 2^20573107 is an apocalyptic number.

20573107 is a deficient number, since it is larger than the sum of its proper divisors (80309).

20573107 is an equidigital number, since it uses as much as digits as its factorization.

20573107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80308.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 20573107 is about 4535.7587016948. The cubic root of 20573107 is about 274.0101360202.

The spelling of 20573107 in words is "twenty million, five hundred seventy-three thousand, one hundred seven".