47277287 has 4 divisors (see below), whose sum is σ = 47429616. Its totient is φ = 47124960.

The previous prime is 47277283. The next prime is 47277317. The reversal of 47277287 is 78277274.

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

It is a cyclic number.

It is not a de Polignac number, because 47277287 - 2² = 47277283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47277281) 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, 75698 + ... + 76319.

It is an arithmetic number, because the mean of its divisors is an integer number (11857404).

Almost surely, 2^47277287 is an apocalyptic number.

47277287 is a deficient number, since it is larger than the sum of its proper divisors (152329).

47277287 is a wasteful number, since it uses less digits than its factorization.

47277287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152328.

The product of its digits is 307328, while the sum is 44.

The square root of 47277287 is about 6875.8480931446. The cubic root of 47277287 is about 361.5909194105.

The spelling of 47277287 in words is "forty-seven million, two hundred seventy-seven thousand, two hundred eighty-seven".