77030550 has 36 divisors (see below), whose sum is σ = 206956620. Its totient is φ = 20541360.

The previous prime is 77030543. The next prime is 77030561. The reversal of 77030550 is 5503077.

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 17 ways as a sum of consecutive naturals, for example, 85140 + ... + 86039.

It is an arithmetic number, because the mean of its divisors is an integer number (5748795).

Almost surely, 2^77030550 is an apocalyptic number.

77030550 is an abundant number, since it is smaller than the sum of its proper divisors (129926070).

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

77030550 is a wasteful number, since it uses less digits than its factorization.

77030550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171197 (or 171189 counting only the distinct ones).

The product of its (nonzero) digits is 3675, while the sum is 27.

The square root of 77030550 is about 8776.7049625700. The cubic root of 77030550 is about 425.4883429261.

The spelling of 77030550 in words is "seventy-seven million, thirty thousand, five hundred fifty".