77482281 has 8 divisors (see below), whose sum is σ = 105060960. Its totient is φ = 50779232.

The previous prime is 77482219. The next prime is 77482283. The reversal of 77482281 is 18228477.

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 77482281 - 2¹⁴ = 77465897 is a prime.

It is a super-2 number, since 2×77482281² = 12007007737925922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77482283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218700 + ... + 219053.

It is an arithmetic number, because the mean of its divisors is an integer number (13132620).

Almost surely, 2^77482281 is an apocalyptic number.

It is an amenable number.

77482281 is a deficient number, since it is larger than the sum of its proper divisors (27578679).

77482281 is a wasteful number, since it uses less digits than its factorization.

77482281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437815.

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

The square root of 77482281 is about 8802.4020017266. The cubic root of 77482281 is about 426.3184541607.

The spelling of 77482281 in words is "seventy-seven million, four hundred eighty-two thousand, two hundred eighty-one".