48561381 has 12 divisors (see below), whose sum is σ = 76521120. Its totient is φ = 29431080.

The previous prime is 48561361. The next prime is 48561413. The reversal of 48561381 is 18316584.

It is not a de Polignac number, because 48561381 - 2¹⁴ = 48544997 is a prime.

It is a super-2 number, since 2×48561381² = 4716415449254322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48561301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245161 + ... + 245358.

It is an arithmetic number, because the mean of its divisors is an integer number (6376760).

Almost surely, 2^48561381 is an apocalyptic number.

It is an amenable number.

48561381 is a deficient number, since it is larger than the sum of its proper divisors (27959739).

48561381 is a wasteful number, since it uses less digits than its factorization.

48561381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490536 (or 490533 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 48561381 is about 6968.5996441179. The cubic root of 48561381 is about 364.8354321612.

The spelling of 48561381 in words is "forty-eight million, five hundred sixty-one thousand, three hundred eighty-one".