77082545 has 16 divisors (see below), whose sum is σ = 96975360. Its totient is φ = 58707264.

The previous prime is 77082541. The next prime is 77082557. The reversal of 77082545 is 54528077.

It is a cyclic number.

It is not a de Polignac number, because 77082545 - 2² = 77082541 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 77082499 and 77082508.

It is not an unprimeable number, because it can be changed into a prime (77082541) 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, 24872 + ... + 27798.

It is an arithmetic number, because the mean of its divisors is an integer number (6060960).

It is a Poulet number, since it divides 2^77082544-1.

Almost surely, 2^77082545 is an apocalyptic number.

It is an amenable number.

77082545 is a deficient number, since it is larger than the sum of its proper divisors (19892815).

77082545 is a wasteful number, since it uses less digits than its factorization.

77082545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 77082545 is about 8779.6665654226. Note that the first 3 decimals coincide. The cubic root of 77082545 is about 425.5840551276.

The spelling of 77082545 in words is "seventy-seven million, eighty-two thousand, five hundred forty-five".