49488781 has 4 divisors (see below), whose sum is σ = 49572000. Its totient is φ = 49405564.

The previous prime is 49488779. The next prime is 49488799. The reversal of 49488781 is 18788494.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49488781 - 2¹ = 49488779 is a prime.

It is a super-2 number, since 2×49488781² = 4898278889731922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49488701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40711 + ... + 41908.

It is an arithmetic number, because the mean of its divisors is an integer number (12393000).

Almost surely, 2^49488781 is an apocalyptic number.

It is an amenable number.

49488781 is a deficient number, since it is larger than the sum of its proper divisors (83219).

49488781 is an equidigital number, since it uses as much as digits as its factorization.

49488781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83218.

The product of its digits is 516096, while the sum is 49.

The square root of 49488781 is about 7034.8262949415. The cubic root of 49488781 is about 367.1432816685.

The spelling of 49488781 in words is "forty-nine million, four hundred eighty-eight thousand, seven hundred eighty-one".