48179781 has 24 divisors (see below), whose sum is σ = 75986456. Its totient is φ = 29237760.

The previous prime is 48179773. The next prime is 48179827. The reversal of 48179781 is 18797184.

48179781 is a `hidden beast` number, since 481 + 7 + 97 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14062500 + 34117281 = 3750^2 + 5841^2 .

It is not a de Polignac number, because 48179781 - 2³ = 48179773 is a prime.

It is a super-2 number, since 2×48179781² = 4642582594415922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48179711) 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, 5721 + ... + 11361.

Almost surely, 2^48179781 is an apocalyptic number.

It is an amenable number.

48179781 is a deficient number, since it is larger than the sum of its proper divisors (27806675).

48179781 is a wasteful number, since it uses less digits than its factorization.

48179781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5733 (or 5730 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 48179781 is about 6941.1656802010. The cubic root of 48179781 is about 363.8772807136.

The spelling of 48179781 in words is "forty-eight million, one hundred seventy-nine thousand, seven hundred eighty-one".