20752453 has 2 divisors, whose sum is σ = 20752454. Its totient is φ = 20752452.

The previous prime is 20752447. The next prime is 20752469. The reversal of 20752453 is 35425702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17447329 + 3305124 = 4177^2 + 1818^2 .

It is a cyclic number.

It is not a de Polignac number, because 20752453 - 2¹³ = 20744261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20752553) 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, 10376226 + 10376227.

It is an arithmetic number, because the mean of its divisors is an integer number (10376227).

Almost surely, 2^20752453 is an apocalyptic number.

It is an amenable number.

20752453 is a deficient number, since it is larger than the sum of its proper divisors (1).

20752453 is an equidigital number, since it uses as much as digits as its factorization.

20752453 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 20752453 is about 4555.4860333449. The cubic root of 20752453 is about 274.8040609765.

The spelling of 20752453 in words is "twenty million, seven hundred fifty-two thousand, four hundred fifty-three".