20453527 has 2 divisors, whose sum is σ = 20453528. Its totient is φ = 20453526.

The previous prime is 20453501. The next prime is 20453539. The reversal of 20453527 is 72535402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20453527 - 2¹⁵ = 20420759 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20453495 and 20453504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20453327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10226763 + 10226764.

It is an arithmetic number, because the mean of its divisors is an integer number (10226764).

Almost surely, 2^20453527 is an apocalyptic number.

20453527 is a deficient number, since it is larger than the sum of its proper divisors (1).

20453527 is an equidigital number, since it uses as much as digits as its factorization.

20453527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 20453527 is about 4522.5575728784. The cubic root of 20453527 is about 273.4782147177.

Adding to 20453527 its reverse (72535402), we get a palindrome (92988929).

The spelling of 20453527 in words is "twenty million, four hundred fifty-three thousand, five hundred twenty-seven".