45777779 has 4 divisors (see below), whose sum is σ = 45793776. Its totient is φ = 45761784.

The previous prime is 45777763. The next prime is 45777791. The reversal of 45777779 is 97777754.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45777779 - 2⁴ = 45777763 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 45777779.

It is not an unprimeable number, because it can be changed into a prime (45777799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2399 + ... + 9864.

It is an arithmetic number, because the mean of its divisors is an integer number (11448444).

Almost surely, 2^45777779 is an apocalyptic number.

45777779 is a deficient number, since it is larger than the sum of its proper divisors (15997).

45777779 is a wasteful number, since it uses less digits than its factorization.

45777779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15996.

The product of its digits is 3025260, while the sum is 53.

The square root of 45777779 is about 6765.9278003833. The cubic root of 45777779 is about 357.7268783352.

The spelling of 45777779 in words is "forty-five million, seven hundred seventy-seven thousand, seven hundred seventy-nine".