48115581 has 32 divisors (see below), whose sum is σ = 70371840. Its totient is φ = 29139264.

The previous prime is 48115549. The next prime is 48115597. The reversal of 48115581 is 18551184.

It is not a de Polignac number, because 48115581 - 2⁵ = 48115549 is a prime.

It is a super-2 number, since 2×48115581² = 4630218269935122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48115531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164071 + ... + 164363.

It is an arithmetic number, because the mean of its divisors is an integer number (2199120).

Almost surely, 2^48115581 is an apocalyptic number.

It is an amenable number.

48115581 is a deficient number, since it is larger than the sum of its proper divisors (22256259).

48115581 is a wasteful number, since it uses less digits than its factorization.

48115581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425.

The product of its digits is 6400, while the sum is 33.

The square root of 48115581 is about 6936.5395551384. The cubic root of 48115581 is about 363.7155856012.

The spelling of 48115581 in words is "forty-eight million, one hundred fifteen thousand, five hundred eighty-one".