20254511 has 2 divisors, whose sum is σ = 20254512. Its totient is φ = 20254510.

The previous prime is 20254483. The next prime is 20254519. The reversal of 20254511 is 11545202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20254511 - 2⁶ = 20254447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20254519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10127255 + 10127256.

It is an arithmetic number, because the mean of its divisors is an integer number (10127256).

Almost surely, 2^20254511 is an apocalyptic number.

20254511 is a deficient number, since it is larger than the sum of its proper divisors (1).

20254511 is an equidigital number, since it uses as much as digits as its factorization.

20254511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 20254511 is about 4500.5011943116. The cubic root of 20254511 is about 272.5883270048.

Adding to 20254511 its reverse (11545202), we get a palindrome (31799713).

The spelling of 20254511 in words is "twenty million, two hundred fifty-four thousand, five hundred eleven".