77541156 has 108 divisors (see below), whose sum is σ = 246320256. Its totient is φ = 20132640.

The previous prime is 77541143. The next prime is 77541197. The reversal of 77541156 is 65114577.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 77541156.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29221 + ... + 31763.

Almost surely, 2^77541156 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 77541156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123160128).

77541156 is an abundant number, since it is smaller than the sum of its proper divisors (168779100).

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

77541156 is a wasteful number, since it uses less digits than its factorization.

77541156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582 (or 2566 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 77541156 is about 8805.7456243069. The cubic root of 77541156 is about 426.4264063448.

The spelling of 77541156 in words is "seventy-seven million, five hundred forty-one thousand, one hundred fifty-six".