47490565 has 4 divisors (see below), whose sum is σ = 56988684. Its totient is φ = 37992448.

The previous prime is 47490563. The next prime is 47490577. The reversal of 47490565 is 56509474.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6543364 + 40947201 = 2558^2 + 6399^2 .

It is a cyclic number.

It is not a de Polignac number, because 47490565 - 2¹ = 47490563 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47490563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4749052 + ... + 4749061.

It is an arithmetic number, because the mean of its divisors is an integer number (14247171).

Almost surely, 2^47490565 is an apocalyptic number.

It is an amenable number.

47490565 is a deficient number, since it is larger than the sum of its proper divisors (9498119).

47490565 is an equidigital number, since it uses as much as digits as its factorization.

47490565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9498118.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 47490565 is about 6891.3398552096. The cubic root of 47490565 is about 362.1338419243.

The spelling of 47490565 in words is "forty-seven million, four hundred ninety thousand, five hundred sixty-five".