77445150 has 48 divisors (see below), whose sum is σ = 196546944. Its totient is φ = 20170080.

The previous prime is 77445139. The next prime is 77445227. The reversal of 77445150 is 5154477.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 447 + ... + 12453.

It is an arithmetic number, because the mean of its divisors is an integer number (4094728).

Almost surely, 2^77445150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77445150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98273472).

77445150 is an abundant number, since it is smaller than the sum of its proper divisors (119101794).

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

77445150 is a wasteful number, since it uses less digits than its factorization.

77445150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12065 (or 12060 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 77445150 is about 8800.2926087716. The cubic root of 77445150 is about 426.2503432774.

The spelling of 77445150 in words is "seventy-seven million, four hundred forty-five thousand, one hundred fifty".