47490561 has 12 divisors (see below), whose sum is σ = 71580288. Its totient is φ = 30283704.

The previous prime is 47490529. The next prime is 47490563. The reversal of 47490561 is 16509474.

47490561 is a `hidden beast` number, since 4 + 7 + 4 + 90 + 561 = 666.

It is not a de Polignac number, because 47490561 - 2⁵ = 47490529 is a prime.

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

It is a Curzon number.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114505 + ... + 114918.

It is an arithmetic number, because the mean of its divisors is an integer number (5965024).

Almost surely, 2^47490561 is an apocalyptic number.

It is an amenable number.

47490561 is a deficient number, since it is larger than the sum of its proper divisors (24089727).

47490561 is a wasteful number, since it uses less digits than its factorization.

47490561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229452 (or 229449 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 47490561 is about 6891.3395649902. The cubic root of 47490561 is about 362.1338317571.

The spelling of 47490561 in words is "forty-seven million, four hundred ninety thousand, five hundred sixty-one".