77055372 has 36 divisors (see below), whose sum is σ = 198927456. Its totient is φ = 25138080.

The previous prime is 77055371. The next prime is 77055389. The reversal of 77055372 is 27355077.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (77055371) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 21079 + ... + 24462.

Almost surely, 2^77055372 is an apocalyptic number.

It is an amenable number.

77055372 is an abundant number, since it is smaller than the sum of its proper divisors (121872084).

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

77055372 is a wasteful number, since it uses less digits than its factorization.

77055372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45598 (or 45593 counting only the distinct ones).

The product of its (nonzero) digits is 51450, while the sum is 36.

The square root of 77055372 is about 8778.1189328922. The cubic root of 77055372 is about 425.5340405418.

The spelling of 77055372 in words is "seventy-seven million, fifty-five thousand, three hundred seventy-two".