48577981 has 2 divisors, whose sum is σ = 48577982. Its totient is φ = 48577980.

The previous prime is 48577979. The next prime is 48578009. The reversal of 48577981 is 18977584.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28408900 + 20169081 = 5330^2 + 4491^2 .

It is a cyclic number.

It is not a de Polignac number, because 48577981 - 2¹ = 48577979 is a prime.

It is a super-2 number, since 2×48577981² = 4719640476072722, which contains 22 as substring.

Together with 48577979, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48577901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24288990 + 24288991.

It is an arithmetic number, because the mean of its divisors is an integer number (24288991).

Almost surely, 2^48577981 is an apocalyptic number.

It is an amenable number.

48577981 is a deficient number, since it is larger than the sum of its proper divisors (1).

48577981 is an equidigital number, since it uses as much as digits as its factorization.

48577981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 49.

The square root of 48577981 is about 6969.7905994370. The cubic root of 48577981 is about 364.8769986495.

The spelling of 48577981 in words is "forty-eight million, five hundred seventy-seven thousand, nine hundred eighty-one".