20095549 has 2 divisors, whose sum is σ = 20095550. Its totient is φ = 20095548.

The previous prime is 20095501. The next prime is 20095553. The reversal of 20095549 is 94559002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20088324 + 7225 = 4482^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 20095549 - 2⁷ = 20095421 is a prime.

It is a super-2 number, since 2×20095549² = 807662179222802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20095249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10047774 + 10047775.

It is an arithmetic number, because the mean of its divisors is an integer number (10047775).

Almost surely, 2^20095549 is an apocalyptic number.

It is an amenable number.

20095549 is a deficient number, since it is larger than the sum of its proper divisors (1).

20095549 is an equidigital number, since it uses as much as digits as its factorization.

20095549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 20095549 is about 4482.8059293260. The cubic root of 20095549 is about 271.8733415850.

The spelling of 20095549 in words is "twenty million, ninety-five thousand, five hundred forty-nine".