77501081 has 8 divisors (see below), whose sum is σ = 88682880. Its totient is φ = 66346848.

The previous prime is 77501069. The next prime is 77501089. The reversal of 77501081 is 18010577.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77501081 is a prime.

It is a super-2 number, since 2×77501081² = 12012835112337122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77501089) 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, 461 + ... + 12458.

It is an arithmetic number, because the mean of its divisors is an integer number (11085360).

Almost surely, 2^77501081 is an apocalyptic number.

It is an amenable number.

77501081 is a deficient number, since it is larger than the sum of its proper divisors (11181799).

77501081 is a wasteful number, since it uses less digits than its factorization.

77501081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13783.

The product of its (nonzero) digits is 1960, while the sum is 29.

The square root of 77501081 is about 8803.4698272897. The cubic root of 77501081 is about 426.3529314576.

The spelling of 77501081 in words is "seventy-seven million, five hundred one thousand, eighty-one".