20626051 has 2 divisors, whose sum is σ = 20626052. Its totient is φ = 20626050.

The previous prime is 20626037. The next prime is 20626061. The reversal of 20626051 is 15062602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20626051 - 2¹¹ = 20624003 is a prime.

It is not a weakly prime, because it can be changed into another prime (20626061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10313025 + 10313026.

It is an arithmetic number, because the mean of its divisors is an integer number (10313026).

Almost surely, 2^20626051 is an apocalyptic number.

20626051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20626051 is an equidigital number, since it uses as much as digits as its factorization.

20626051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20626051 is about 4541.5912409639. The cubic root of 20626051 is about 274.2449857499.

Adding to 20626051 its reverse (15062602), we get a palindrome (35688653).

The spelling of 20626051 in words is "twenty million, six hundred twenty-six thousand, fifty-one".