47542517 has 4 divisors (see below), whose sum is σ = 51864576. Its totient is φ = 43220460.

The previous prime is 47542511. The next prime is 47542529. The reversal of 47542517 is 71524574.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47542517 - 2¹⁰ = 47541493 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 2161013 + ... + 2161034.

It is an arithmetic number, because the mean of its divisors is an integer number (12966144).

Almost surely, 2^47542517 is an apocalyptic number.

It is an amenable number.

47542517 is a deficient number, since it is larger than the sum of its proper divisors (4322059).

47542517 is a wasteful number, since it uses less digits than its factorization.

47542517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4322058.

The product of its digits is 39200, while the sum is 35.

The square root of 47542517 is about 6895.1081934949. The cubic root of 47542517 is about 362.2658451351.

The spelling of 47542517 in words is "forty-seven million, five hundred forty-two thousand, five hundred seventeen".