20926153 has 2 divisors, whose sum is σ = 20926154. Its totient is φ = 20926152.

The previous prime is 20926093. The next prime is 20926181. The reversal of 20926153 is 35162902.

It is an a-pointer prime, because the next prime (20926181) can be obtained adding 20926153 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19998784 + 927369 = 4472^2 + 963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20926153 is a prime.

It is not a weakly prime, because it can be changed into another prime (20926453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10463076 + 10463077.

It is an arithmetic number, because the mean of its divisors is an integer number (10463077).

Almost surely, 2^20926153 is an apocalyptic number.

It is an amenable number.

20926153 is a deficient number, since it is larger than the sum of its proper divisors (1).

20926153 is an equidigital number, since it uses as much as digits as its factorization.

20926153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 20926153 is about 4574.5112307218. The cubic root of 20926153 is about 275.5686437363.

It can be divided in two parts, 209 and 26153, that added together give a palindrome (26362).

The spelling of 20926153 in words is "twenty million, nine hundred twenty-six thousand, one hundred fifty-three".