77255137 has 8 divisors (see below), whose sum is σ = 80974656. Its totient is φ = 73565712.

The previous prime is 77255117. The next prime is 77255141. The reversal of 77255137 is 73155277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77255137 - 2¹¹ = 77253089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77255096 and 77255105.

It is not an unprimeable number, because it can be changed into a prime (77255117) 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 7 ways as a sum of consecutive naturals, for example, 2178 + ... + 12619.

It is an arithmetic number, because the mean of its divisors is an integer number (10121832).

Almost surely, 2^77255137 is an apocalyptic number.

It is an amenable number.

77255137 is a deficient number, since it is larger than the sum of its proper divisors (3719519).

77255137 is a wasteful number, since it uses less digits than its factorization.

77255137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15047.

The product of its digits is 51450, while the sum is 37.

The square root of 77255137 is about 8789.4901444851. The cubic root of 77255137 is about 425.9014536170.

The spelling of 77255137 in words is "seventy-seven million, two hundred fifty-five thousand, one hundred thirty-seven".