21760373 has 2 divisors, whose sum is σ = 21760374. Its totient is φ = 21760372.

The previous prime is 21760367. The next prime is 21760379. The reversal of 21760373 is 37306712.

It is a balanced prime because it is at equal distance from previous prime (21760367) and next prime (21760379).

It can be written as a sum of positive squares in only one way, i.e., 15816529 + 5943844 = 3977^2 + 2438^2 .

It is a cyclic number.

It is not a de Polignac number, because 21760373 - 2⁶ = 21760309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21760379) 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, 10880186 + 10880187.

It is an arithmetic number, because the mean of its divisors is an integer number (10880187).

Almost surely, 2^21760373 is an apocalyptic number.

It is an amenable number.

21760373 is a deficient number, since it is larger than the sum of its proper divisors (1).

21760373 is an equidigital number, since it uses as much as digits as its factorization.

21760373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 21760373 is about 4664.8014963126. The cubic root of 21760373 is about 279.1828770667.

The spelling of 21760373 in words is "twenty-one million, seven hundred sixty thousand, three hundred seventy-three".