48573981 has 24 divisors (see below), whose sum is σ = 75324600. Its totient is φ = 30053376.

The previous prime is 48573979. The next prime is 48573989. The reversal of 48573981 is 18937584.

It can be written as a sum of positive squares in 4 ways, for example, as 3132900 + 45441081 = 1770^2 + 6741^2 .

It is not a de Polignac number, because 48573981 - 2¹ = 48573979 is a prime.

It is a super-2 number, since 2×48573981² = 4718863260376722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48573989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8995 + ... + 13343.

It is an arithmetic number, because the mean of its divisors is an integer number (3138525).

Almost surely, 2^48573981 is an apocalyptic number.

It is an amenable number.

48573981 is a deficient number, since it is larger than the sum of its proper divisors (26750619).

48573981 is a wasteful number, since it uses less digits than its factorization.

48573981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445 (or 4442 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 48573981 is about 6969.5036408628. The cubic root of 48573981 is about 364.8669834943.

The spelling of 48573981 in words is "forty-eight million, five hundred seventy-three thousand, nine hundred eighty-one".