47549491 has 12 divisors (see below), whose sum is σ = 52619056. Its totient is φ = 42934320.

The previous prime is 47549471. The next prime is 47549503. The reversal of 47549491 is 19494574.

47549491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47549491 - 2⁷ = 47549363 is a prime.

It is a super-3 number, since 3×47549491³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47549461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17746 + ... + 20248.

Almost surely, 2^47549491 is an apocalyptic number.

47549491 is a deficient number, since it is larger than the sum of its proper divisors (5069565).

47549491 is a wasteful number, since it uses less digits than its factorization.

47549491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682 (or 2671 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 47549491 is about 6895.6138958036. The cubic root of 47549491 is about 362.2835578313.

The spelling of 47549491 in words is "forty-seven million, five hundred forty-nine thousand, four hundred ninety-one".