45994681 has 2 divisors, whose sum is σ = 45994682. Its totient is φ = 45994680.

The previous prime is 45994679. The next prime is 45994727. The reversal of 45994681 is 18649954.

It is a happy number.

It is an a-pointer prime, because the next prime (45994727) can be obtained adding 45994681 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42445225 + 3549456 = 6515^2 + 1884^2 .

It is a cyclic number.

It is not a de Polignac number, because 45994681 - 2¹ = 45994679 is a prime.

It is a super-2 number, since 2×45994681² = 4231021360583522, which contains 22 as substring.

Together with 45994679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45994631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22997340 + 22997341.

It is an arithmetic number, because the mean of its divisors is an integer number (22997341).

Almost surely, 2^45994681 is an apocalyptic number.

It is an amenable number.

45994681 is a deficient number, since it is larger than the sum of its proper divisors (1).

45994681 is an equidigital number, since it uses as much as digits as its factorization.

45994681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 46.

The square root of 45994681 is about 6781.9378499069. The cubic root of 45994681 is about 358.2909762565.

The spelling of 45994681 in words is "forty-five million, nine hundred ninety-four thousand, six hundred eighty-one".