77545048 has 48 divisors (see below), whose sum is σ = 169926120. Its totient is φ = 33078528.

The previous prime is 77545033. The next prime is 77545049. The reversal of 77545048 is 84054577.

It is a self number, because there is not a number n which added to its sum of digits gives 77545048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77545049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131811 + ... + 132397.

Almost surely, 2^77545048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77545048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84963060).

77545048 is an abundant number, since it is smaller than the sum of its proper divisors (92381072).

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

77545048 is a wasteful number, since it uses less digits than its factorization.

77545048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944 (or 933 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 77545048 is about 8805.9666136092. The cubic root of 77545048 is about 426.4335407230.

The spelling of 77545048 in words is "seventy-seven million, five hundred forty-five thousand, forty-eight".