47791505 has 16 divisors (see below), whose sum is σ = 61001424. Its totient is φ = 35819520.

The previous prime is 47791501. The next prime is 47791519. The reversal of 47791505 is 50519774.

It can be written as a sum of positive squares in 8 ways, for example, as 786769 + 47004736 = 887^2 + 6856^2 .

It is not a de Polignac number, because 47791505 - 2² = 47791501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47791501) 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, 19319 + ... + 21651.

It is an arithmetic number, because the mean of its divisors is an integer number (3812589).

Almost surely, 2^47791505 is an apocalyptic number.

It is an amenable number.

47791505 is a deficient number, since it is larger than the sum of its proper divisors (13209919).

47791505 is a wasteful number, since it uses less digits than its factorization.

47791505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 47791505 is about 6913.1400246198. The cubic root of 47791505 is about 362.8971596346.

The spelling of 47791505 in words is "forty-seven million, seven hundred ninety-one thousand, five hundred five".