47089561 has 4 divisors (see below), whose sum is σ = 47297232. Its totient is φ = 46881892.

The previous prime is 47089531. The next prime is 47089583. The reversal of 47089561 is 16598074.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16598074 = 2 ⋅8299037.

It is a cyclic number.

It is not a de Polignac number, because 47089561 - 2⁵ = 47089529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47089531) 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, 103495 + ... + 103948.

It is an arithmetic number, because the mean of its divisors is an integer number (11824308).

Almost surely, 2^47089561 is an apocalyptic number.

It is an amenable number.

47089561 is a deficient number, since it is larger than the sum of its proper divisors (207671).

47089561 is a wasteful number, since it uses less digits than its factorization.

47089561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207670.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 47089561 is about 6862.1833988899. The cubic root of 47089561 is about 361.1116895682. Note that the first 3 decimals are identical.

The spelling of 47089561 in words is "forty-seven million, eighty-nine thousand, five hundred sixty-one".