77050520 has 16 divisors (see below), whose sum is σ = 173363760. Its totient is φ = 30820192.

The previous prime is 77050507. The next prime is 77050543. The reversal of 77050520 is 2505077.

It is a self number, because there is not a number n which added to its sum of digits gives 77050520.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963092 + ... + 963171.

It is an arithmetic number, because the mean of its divisors is an integer number (10835235).

Almost surely, 2^77050520 is an apocalyptic number.

It is an amenable number.

77050520 is an abundant number, since it is smaller than the sum of its proper divisors (96313240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77050520 is a wasteful number, since it uses less digits than its factorization.

77050520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926274 (or 1926270 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 26.

The square root of 77050520 is about 8777.8425595359. The cubic root of 77050520 is about 425.5251087202.

Adding to 77050520 its reverse (2505077), we get a palindrome (79555597).

The spelling of 77050520 in words is "seventy-seven million, fifty thousand, five hundred twenty".