20954441 has 2 divisors, whose sum is σ = 20954442. Its totient is φ = 20954440.

The previous prime is 20954413. The next prime is 20954447. The reversal of 20954441 is 14445902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15054400 + 5900041 = 3880^2 + 2429^2 .

It is a cyclic number.

It is not a de Polignac number, because 20954441 - 2⁶ = 20954377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20954447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10477220 + 10477221.

It is an arithmetic number, because the mean of its divisors is an integer number (10477221).

Almost surely, 2^20954441 is an apocalyptic number.

It is an amenable number.

20954441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20954441 is an equidigital number, since it uses as much as digits as its factorization.

20954441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 20954441 is about 4577.6021015374. The cubic root of 20954441 is about 275.6927591733.

The spelling of 20954441 in words is "twenty million, nine hundred fifty-four thousand, four hundred forty-one".