47311561 has 8 divisors (see below), whose sum is σ = 54648864. Its totient is φ = 40480320.

The previous prime is 47311547. The next prime is 47311571. The reversal of 47311561 is 16511374.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47311561 - 2¹¹ = 47309513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47311541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126315 + ... + 126688.

It is an arithmetic number, because the mean of its divisors is an integer number (6831108).

Almost surely, 2^47311561 is an apocalyptic number.

It is an amenable number.

47311561 is a deficient number, since it is larger than the sum of its proper divisors (7337303).

47311561 is a wasteful number, since it uses less digits than its factorization.

47311561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253031.

The product of its digits is 2520, while the sum is 28.

The square root of 47311561 is about 6878.3399886891. The cubic root of 47311561 is about 361.6782775926.

The spelling of 47311561 in words is "forty-seven million, three hundred eleven thousand, five hundred sixty-one".