45891977 has 2 divisors, whose sum is σ = 45891978. Its totient is φ = 45891976.

The previous prime is 45891941. The next prime is 45891983. The reversal of 45891977 is 77919854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24167056 + 21724921 = 4916^2 + 4661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45891977 is a prime.

It is not a weakly prime, because it can be changed into another prime (45891907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22945988 + 22945989.

It is an arithmetic number, because the mean of its divisors is an integer number (22945989).

Almost surely, 2^45891977 is an apocalyptic number.

It is an amenable number.

45891977 is a deficient number, since it is larger than the sum of its proper divisors (1).

45891977 is an equidigital number, since it uses as much as digits as its factorization.

45891977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 50.

The square root of 45891977 is about 6774.3617411532. The cubic root of 45891977 is about 358.0240951085.

The spelling of 45891977 in words is "forty-five million, eight hundred ninety-one thousand, nine hundred seventy-seven".