77147452 has 12 divisors (see below), whose sum is σ = 135071496. Its totient is φ = 38555600.

The previous prime is 77147443. The next prime is 77147491. The reversal of 77147452 is 25474177.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10827 + ... + 16477.

It is an arithmetic number, because the mean of its divisors is an integer number (11255958).

Almost surely, 2^77147452 is an apocalyptic number.

It is an amenable number.

77147452 is a deficient number, since it is larger than the sum of its proper divisors (57924044).

77147452 is a wasteful number, since it uses less digits than its factorization.

77147452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068 (or 9066 counting only the distinct ones).

The product of its digits is 54880, while the sum is 37.

The square root of 77147452 is about 8783.3622263914. The cubic root of 77147452 is about 425.7034753090.

The spelling of 77147452 in words is "seventy-seven million, one hundred forty-seven thousand, four hundred fifty-two".