47087737 has 4 divisors (see below), whose sum is σ = 47248740. Its totient is φ = 46926736.

The previous prime is 47087707. The next prime is 47087743. The reversal of 47087737 is 73778074.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31595641 + 15492096 = 5621^2 + 3936^2 .

It is a cyclic number.

It is not a de Polignac number, because 47087737 - 2⁷ = 47087609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47087693 and 47087702.

It is not an unprimeable number, because it can be changed into a prime (47087707) 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, 80062 + ... + 80647.

It is an arithmetic number, because the mean of its divisors is an integer number (11812185).

Almost surely, 2^47087737 is an apocalyptic number.

It is an amenable number.

47087737 is a deficient number, since it is larger than the sum of its proper divisors (161003).

47087737 is a wasteful number, since it uses less digits than its factorization.

47087737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161002.

The product of its (nonzero) digits is 230496, while the sum is 43.

The square root of 47087737 is about 6862.0504952966. The cubic root of 47087737 is about 361.1070269904.

The spelling of 47087737 in words is "forty-seven million, eighty-seven thousand, seven hundred thirty-seven".