20926051 has 2 divisors, whose sum is σ = 20926052. Its totient is φ = 20926050.

The previous prime is 20926027. The next prime is 20926057. The reversal of 20926051 is 15062902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20926051 - 2⁵ = 20926019 is a prime.

It is a super-2 number, since 2×20926051² = 875799220909202, which contains 22 as substring.

It is the 4575-th Hogben number.

It is not a weakly prime, because it can be changed into another prime (20926057) by changing a digit.

It is a nontrivial repunit in base 4574.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10463025 + 10463026.

It is an arithmetic number, because the mean of its divisors is an integer number (10463026).

Almost surely, 2^20926051 is an apocalyptic number.

20926051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20926051 is an equidigital number, since it uses as much as digits as its factorization.

20926051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 20926051 is about 4574.5000819762. The cubic root of 20926051 is about 275.5681960024.

Adding to 20926051 its reverse (15062902), we get a palindrome (35988953).

The spelling of 20926051 in words is "twenty million, nine hundred twenty-six thousand, fifty-one".