49681281 has 8 divisors (see below), whose sum is σ = 71337280. Its totient is φ = 30573072.

The previous prime is 49681273. The next prime is 49681301. The reversal of 49681281 is 18218694.

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

It is not a de Polignac number, because 49681281 - 2³ = 49681273 is a prime.

It is a super-2 number, since 2×49681281² = 4936459363601922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1273879 = 49681281 / (4 + 9 + 6 + 8 + 1 + 2 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49681781) 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, 636901 + ... + 636978.

It is an arithmetic number, because the mean of its divisors is an integer number (8917160).

Almost surely, 2^49681281 is an apocalyptic number.

It is an amenable number.

49681281 is a deficient number, since it is larger than the sum of its proper divisors (21655999).

49681281 is a wasteful number, since it uses less digits than its factorization.

49681281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273895.

The product of its digits is 27648, while the sum is 39.

The square root of 49681281 is about 7048.4949457313. The cubic root of 49681281 is about 367.6187001451.

The spelling of 49681281 in words is "forty-nine million, six hundred eighty-one thousand, two hundred eighty-one".