47781005 has 16 divisors (see below), whose sum is σ = 60220800. Its totient is φ = 36324288.

The previous prime is 47780989. The next prime is 47781011. The reversal of 47781005 is 50018774.

It is a cyclic number.

It is not a de Polignac number, because 47781005 - 2⁴ = 47780989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17471 + ... + 20019.

It is an arithmetic number, because the mean of its divisors is an integer number (3763800).

Almost surely, 2^47781005 is an apocalyptic number.

It is an amenable number.

47781005 is a deficient number, since it is larger than the sum of its proper divisors (12439795).

47781005 is a wasteful number, since it uses less digits than its factorization.

47781005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 47781005 is about 6912.3805595468. The cubic root of 47781005 is about 362.8705809971.

Adding to 47781005 its reverse (50018774), we get a palindrome (97799779).

The spelling of 47781005 in words is "forty-seven million, seven hundred eighty-one thousand, five".