45164681 has 2 divisors, whose sum is σ = 45164682. Its totient is φ = 45164680.

The previous prime is 45164641. The next prime is 45164683. The reversal of 45164681 is 18646154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45104656 + 60025 = 6716^2 + 245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45164681 is a prime.

It is a super-4 number, since 4×45164681⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

Together with 45164683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45164683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22582340 + 22582341.

It is an arithmetic number, because the mean of its divisors is an integer number (22582341).

Almost surely, 2^45164681 is an apocalyptic number.

It is an amenable number.

45164681 is a deficient number, since it is larger than the sum of its proper divisors (1).

45164681 is an equidigital number, since it uses as much as digits as its factorization.

45164681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The square root of 45164681 is about 6720.4673200604. The cubic root of 45164681 is about 356.1226931598.

The spelling of 45164681 in words is "forty-five million, one hundred sixty-four thousand, six hundred eighty-one".