47987655 has 8 divisors (see below), whose sum is σ = 76780272. Its totient is φ = 25593408.

The previous prime is 47987647. The next prime is 47987669. The reversal of 47987655 is 55678974.

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

It is not a de Polignac number, because 47987655 - 2³ = 47987647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47987598 and 47987607.

It is a congruent number.

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, 1599574 + ... + 1599603.

It is an arithmetic number, because the mean of its divisors is an integer number (9597534).

Almost surely, 2^47987655 is an apocalyptic number.

47987655 is a deficient number, since it is larger than the sum of its proper divisors (28792617).

47987655 is a wasteful number, since it uses less digits than its factorization.

47987655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199185.

The product of its digits is 2116800, while the sum is 51.

The square root of 47987655 is about 6927.3122493504. The cubic root of 47987655 is about 363.3929598482.

The spelling of 47987655 in words is "forty-seven million, nine hundred eighty-seven thousand, six hundred fifty-five".