48185781 has 16 divisors (see below), whose sum is σ = 73738368. Its totient is φ = 27417600.

The previous prime is 48185773. The next prime is 48185789. The reversal of 48185781 is 18758184.

It is an interprime number because it is at equal distance from previous prime (48185773) and next prime (48185789).

It is not a de Polignac number, because 48185781 - 2³ = 48185773 is a prime.

It is a super-2 number, since 2×48185781² = 4643738981159922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48185789) 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, 301 + ... + 9821.

It is an arithmetic number, because the mean of its divisors is an integer number (4608648).

Almost surely, 2^48185781 is an apocalyptic number.

It is an amenable number.

48185781 is a deficient number, since it is larger than the sum of its proper divisors (25552587).

48185781 is a wasteful number, since it uses less digits than its factorization.

48185781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9772.

The product of its digits is 71680, while the sum is 42.

The square root of 48185781 is about 6941.5978708076. The cubic root of 48185781 is about 363.8923850653.

The spelling of 48185781 in words is "forty-eight million, one hundred eighty-five thousand, seven hundred eighty-one".