48913581 has 16 divisors (see below), whose sum is σ = 69117440. Its totient is φ = 30682800.

The previous prime is 48913559. The next prime is 48913589. The reversal of 48913581 is 18531984.

It is not a de Polignac number, because 48913581 - 2⁵ = 48913549 is a prime.

It is a super-2 number, since 2×48913581² = 4785076812487122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48913589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5766 + ... + 11448.

It is an arithmetic number, because the mean of its divisors is an integer number (4319840).

Almost surely, 2^48913581 is an apocalyptic number.

It is an amenable number.

48913581 is a deficient number, since it is larger than the sum of its proper divisors (20203859).

48913581 is a wasteful number, since it uses less digits than its factorization.

48913581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5856.

The product of its digits is 34560, while the sum is 39.

The square root of 48913581 is about 6993.8244902199. The cubic root of 48913581 is about 365.7153195525.

It can be divided in two parts, 48913 and 581, that added together give a palindrome (49494).

The spelling of 48913581 in words is "forty-eight million, nine hundred thirteen thousand, five hundred eighty-one".