47581545 has 32 divisors (see below), whose sum is σ = 84633984. Its totient is φ = 22630400.

The previous prime is 47581543. The next prime is 47581561. The reversal of 47581545 is 54518574.

It is not a de Polignac number, because 47581545 - 2¹ = 47581543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47581543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6025 + ... + 11465.

It is an arithmetic number, because the mean of its divisors is an integer number (2644812).

Almost surely, 2^47581545 is an apocalyptic number.

It is an amenable number.

47581545 is a deficient number, since it is larger than the sum of its proper divisors (37052439).

47581545 is a wasteful number, since it uses less digits than its factorization.

47581545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513.

The product of its digits is 112000, while the sum is 39.

The square root of 47581545 is about 6897.9377352945. The cubic root of 47581545 is about 362.3649469164.

The spelling of 47581545 in words is "forty-seven million, five hundred eighty-one thousand, five hundred forty-five".