20873051 has 2 divisors, whose sum is σ = 20873052. Its totient is φ = 20873050.

The previous prime is 20873003. The next prime is 20873063. The reversal of 20873051 is 15037802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20873051 - 2⁶ = 20872987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20873051.

It is not a weakly prime, because it can be changed into another prime (20873071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10436525 + 10436526.

It is an arithmetic number, because the mean of its divisors is an integer number (10436526).

Almost surely, 2^20873051 is an apocalyptic number.

20873051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20873051 is an equidigital number, since it uses as much as digits as its factorization.

20873051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 20873051 is about 4568.7034265752. The cubic root of 20873051 is about 275.3353528662.

The spelling of 20873051 in words is "twenty million, eight hundred seventy-three thousand, fifty-one".