77955532 has 12 divisors (see below), whose sum is σ = 138291496. Its totient is φ = 38443680.

The previous prime is 77955503. The next prime is 77955569. The reversal of 77955532 is 23555977.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133194 + ... + 133777.

Almost surely, 2^77955532 is an apocalyptic number.

It is an amenable number.

77955532 is a deficient number, since it is larger than the sum of its proper divisors (60335964).

77955532 is a wasteful number, since it uses less digits than its factorization.

77955532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267048 (or 267046 counting only the distinct ones).

The product of its digits is 330750, while the sum is 43.

The square root of 77955532 is about 8829.2430026588. The cubic root of 77955532 is about 427.1846576127.

It can be divided in two parts, 77955 and 532, that added together give a palindrome (78487).

The spelling of 77955532 in words is "seventy-seven million, nine hundred fifty-five thousand, five hundred thirty-two".