45661801 has 2 divisors, whose sum is σ = 45661802. Its totient is φ = 45661800.

The previous prime is 45661799. The next prime is 45661841. The reversal of 45661801 is 10816654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43243776 + 2418025 = 6576^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 45661801 - 2¹ = 45661799 is a prime.

Together with 45661799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45661841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22830900 + 22830901.

It is an arithmetic number, because the mean of its divisors is an integer number (22830901).

Almost surely, 2^45661801 is an apocalyptic number.

It is an amenable number.

45661801 is a deficient number, since it is larger than the sum of its proper divisors (1).

45661801 is an equidigital number, since it uses as much as digits as its factorization.

45661801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 45661801 is about 6757.3516261920. The cubic root of 45661801 is about 357.4245225111.

The spelling of 45661801 in words is "forty-five million, six hundred sixty-one thousand, eight hundred one".