45777881 has 2 divisors, whose sum is σ = 45777882. Its totient is φ = 45777880.

The previous prime is 45777871. The next prime is 45777887. The reversal of 45777881 is 18877754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40208281 + 5569600 = 6341^2 + 2360^2 .

It is a cyclic number.

It is not a de Polignac number, because 45777881 - 2¹⁸ = 45515737 is a prime.

It is a super-2 number, since 2×45777881² = 4191228777700322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45777887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22888940 + 22888941.

It is an arithmetic number, because the mean of its divisors is an integer number (22888941).

Almost surely, 2^45777881 is an apocalyptic number.

It is an amenable number.

45777881 is a deficient number, since it is larger than the sum of its proper divisors (1).

45777881 is an equidigital number, since it uses as much as digits as its factorization.

45777881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 439040, while the sum is 47.

The square root of 45777881 is about 6765.9353381480. The cubic root of 45777881 is about 357.7271440254.

The spelling of 45777881 in words is "forty-five million, seven hundred seventy-seven thousand, eight hundred eighty-one".