20763541 has 2 divisors, whose sum is σ = 20763542. Its totient is φ = 20763540.

The previous prime is 20763493. The next prime is 20763551. The reversal of 20763541 is 14536702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18576100 + 2187441 = 4310^2 + 1479^2 .

It is a cyclic number.

It is not a de Polignac number, because 20763541 - 2¹¹ = 20761493 is a prime.

It is a super-2 number, since 2×20763541² = 862249269717362, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20763551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10381770 + 10381771.

It is an arithmetic number, because the mean of its divisors is an integer number (10381771).

Almost surely, 2^20763541 is an apocalyptic number.

It is an amenable number.

20763541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20763541 is an equidigital number, since it uses as much as digits as its factorization.

20763541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20763541 is about 4556.7028650111. The cubic root of 20763541 is about 274.8529947084.

The spelling of 20763541 in words is "twenty million, seven hundred sixty-three thousand, five hundred forty-one".