48566981 has 4 divisors (see below), whose sum is σ = 48682764. Its totient is φ = 48451200.

The previous prime is 48566939. The next prime is 48566989. The reversal of 48566981 is 18966584.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17986081 + 30580900 = 4241^2 + 5530^2 .

It is a cyclic number.

It is not a de Polignac number, because 48566981 - 2²² = 44372677 is a prime.

It is a super-2 number, since 2×48566981² = 4717503286908722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48566989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57260 + ... + 58101.

It is an arithmetic number, because the mean of its divisors is an integer number (12170691).

Almost surely, 2^48566981 is an apocalyptic number.

It is an amenable number.

48566981 is a deficient number, since it is larger than the sum of its proper divisors (115783).

48566981 is a wasteful number, since it uses less digits than its factorization.

48566981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115782.

The product of its digits is 414720, while the sum is 47.

The square root of 48566981 is about 6969.0014349260. The cubic root of 48566981 is about 364.8494556496.

The spelling of 48566981 in words is "forty-eight million, five hundred sixty-six thousand, nine hundred eighty-one".