47731559 has 2 divisors, whose sum is σ = 47731560. Its totient is φ = 47731558.

The previous prime is 47731513. The next prime is 47731571. The reversal of 47731559 is 95513774.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47731559 - 2¹⁶ = 47666023 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47731259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23865779 + 23865780.

It is an arithmetic number, because the mean of its divisors is an integer number (23865780).

Almost surely, 2^47731559 is an apocalyptic number.

47731559 is a deficient number, since it is larger than the sum of its proper divisors (1).

47731559 is an equidigital number, since it uses as much as digits as its factorization.

47731559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 41.

The square root of 47731559 is about 6908.8030077576. The cubic root of 47731559 is about 362.7453660255.

The spelling of 47731559 in words is "forty-seven million, seven hundred thirty-one thousand, five hundred fifty-nine".