77445050 has 12 divisors (see below), whose sum is σ = 144047886. Its totient is φ = 30978000.

The previous prime is 77444999. The next prime is 77445061. The reversal of 77445050 is 5054477.

It can be written as a sum of positive squares in 3 ways, for example, as 30481441 + 46963609 = 5521^2 + 6853^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 77444998 and 77445016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 774401 + ... + 774500.

Almost surely, 2^77445050 is an apocalyptic number.

77445050 is a deficient number, since it is larger than the sum of its proper divisors (66602836).

77445050 is a wasteful number, since it uses less digits than its factorization.

77445050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548913 (or 1548908 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 77445050 is about 8800.2869271405. The cubic root of 77445050 is about 426.2501598140.

The spelling of 77445050 in words is "seventy-seven million, four hundred forty-five thousand, fifty".