47455861 has 8 divisors (see below), whose sum is σ = 49224600. Its totient is φ = 45696000.

The previous prime is 47455781. The next prime is 47455871. The reversal of 47455861 is 16855474.

It can be written as a sum of positive squares in 4 ways, for example, as 5788836 + 41667025 = 2406^2 + 6455^2 .

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 47455861 - 2¹³ = 47447669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47455871) 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, 9861 + ... + 13861.

It is an arithmetic number, because the mean of its divisors is an integer number (6153075).

Almost surely, 2^47455861 is an apocalyptic number.

It is an amenable number.

47455861 is a deficient number, since it is larger than the sum of its proper divisors (1768739).

47455861 is a wasteful number, since it uses less digits than its factorization.

47455861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439.

The product of its digits is 134400, while the sum is 40.

The square root of 47455861 is about 6888.8214521789. The cubic root of 47455861 is about 362.0456099751.

The spelling of 47455861 in words is "forty-seven million, four hundred fifty-five thousand, eight hundred sixty-one".