47542561 has 16 divisors (see below), whose sum is σ = 54079488. Its totient is φ = 41403600.

The previous prime is 47542559. The next prime is 47542631. The reversal of 47542561 is 16524574.

It is not a de Polignac number, because 47542561 - 2¹ = 47542559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47542511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35836 + ... + 37138.

It is an arithmetic number, because the mean of its divisors is an integer number (3379968).

Almost surely, 2^47542561 is an apocalyptic number.

It is an amenable number.

47542561 is a deficient number, since it is larger than the sum of its proper divisors (6536927).

47542561 is a wasteful number, since it uses less digits than its factorization.

47542561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452.

The product of its digits is 33600, while the sum is 34.

The square root of 47542561 is about 6895.1113841620. Note that the first 3 decimals coincide. The cubic root of 47542561 is about 362.2659568925.

The spelling of 47542561 in words is "forty-seven million, five hundred forty-two thousand, five hundred sixty-one".