45778009 has 2 divisors, whose sum is σ = 45778010. Its totient is φ = 45778008.

The previous prime is 45778001. The next prime is 45778013. The reversal of 45778009 is 90087754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40602384 + 5175625 = 6372^2 + 2275^2 .

It is a cyclic number.

It is not a de Polignac number, because 45778009 - 2³ = 45778001 is a prime.

It is a super-2 number, since 2×45778009² = 4191252216008162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45778001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22889004 + 22889005.

It is an arithmetic number, because the mean of its divisors is an integer number (22889005).

Almost surely, 2^45778009 is an apocalyptic number.

It is an amenable number.

45778009 is a deficient number, since it is larger than the sum of its proper divisors (1).

45778009 is an equidigital number, since it uses as much as digits as its factorization.

45778009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 45778009 is about 6765.9447972918. The cubic root of 45778009 is about 357.7274774399.

The spelling of 45778009 in words is "forty-five million, seven hundred seventy-eight thousand, nine".