77243151 has 16 divisors (see below), whose sum is σ = 108880640. Its totient is φ = 48574080.

The previous prime is 77243147. The next prime is 77243191. The reversal of 77243151 is 15134277.

It is not a de Polignac number, because 77243151 - 2² = 77243147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77243191) 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 15 ways as a sum of consecutive naturals, for example, 10926 + ... + 16548.

It is an arithmetic number, because the mean of its divisors is an integer number (6805040).

Almost surely, 2^77243151 is an apocalyptic number.

77243151 is a deficient number, since it is larger than the sum of its proper divisors (31637489).

77243151 is a wasteful number, since it uses less digits than its factorization.

77243151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5886.

The product of its digits is 5880, while the sum is 30.

The square root of 77243151 is about 8788.8082809901. The cubic root of 77243151 is about 425.8794265215.

The spelling of 77243151 in words is "seventy-seven million, two hundred forty-three thousand, one hundred fifty-one".