47277145 has 8 divisors (see below), whose sum is σ = 56769480. Its totient is φ = 37797120.

The previous prime is 47277101. The next prime is 47277161. The reversal of 47277145 is 54177274.

It can be written as a sum of positive squares in 4 ways, for example, as 26873856 + 20403289 = 5184^2 + 4517^2 .

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

It is not a de Polignac number, because 47277145 - 2⁹ = 47276633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13761 + ... + 16849.

It is an arithmetic number, because the mean of its divisors is an integer number (7096185).

Almost surely, 2^47277145 is an apocalyptic number.

It is an amenable number.

47277145 is a deficient number, since it is larger than the sum of its proper divisors (9492335).

47277145 is a wasteful number, since it uses less digits than its factorization.

47277145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6155.

The product of its digits is 54880, while the sum is 37.

The square root of 47277145 is about 6875.8377671379. The cubic root of 47277145 is about 361.5905573906.

The spelling of 47277145 in words is "forty-seven million, two hundred seventy-seven thousand, one hundred forty-five".