77282481 has 16 divisors (see below), whose sum is σ = 110992640. Its totient is φ = 47673360.

The previous prime is 77282479. The next prime is 77282497. The reversal of 77282481 is 18428277.

It is not a de Polignac number, because 77282481 - 2¹ = 77282479 is a prime.

It is a super-2 number, since 2×77282481² = 11945163739030722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77282441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13315 + ... + 18216.

It is an arithmetic number, because the mean of its divisors is an integer number (6937040).

Almost surely, 2^77282481 is an apocalyptic number.

It is an amenable number.

77282481 is a deficient number, since it is larger than the sum of its proper divisors (33710159).

77282481 is a wasteful number, since it uses less digits than its factorization.

77282481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31596.

The product of its digits is 50176, while the sum is 39.

The square root of 77282481 is about 8791.0455009629. The cubic root of 77282481 is about 425.9516961255.

The spelling of 77282481 in words is "seventy-seven million, two hundred eighty-two thousand, four hundred eighty-one".