49758181 has 16 divisors (see below), whose sum is σ = 56517120. Its totient is φ = 43409520.

The previous prime is 49758179. The next prime is 49758197. The reversal of 49758181 is 18185794.

It is a happy number.

It is not a de Polignac number, because 49758181 - 2¹ = 49758179 is a prime.

It is a super-2 number, since 2×49758181² = 4951753152857522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49758281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27016 + ... + 28798.

It is an arithmetic number, because the mean of its divisors is an integer number (3532320).

Almost surely, 2^49758181 is an apocalyptic number.

It is an amenable number.

49758181 is a deficient number, since it is larger than the sum of its proper divisors (6758939).

49758181 is a wasteful number, since it uses less digits than its factorization.

49758181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896.

The product of its digits is 80640, while the sum is 43.

The square root of 49758181 is about 7053.9479017072. The cubic root of 49758181 is about 367.8082772789.

The spelling of 49758181 in words is "forty-nine million, seven hundred fifty-eight thousand, one hundred eighty-one".