47824157 has 2 divisors, whose sum is σ = 47824158. Its totient is φ = 47824156.

The previous prime is 47824141. The next prime is 47824169. The reversal of 47824157 is 75142874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46594276 + 1229881 = 6826^2 + 1109^2 .

It is a cyclic number.

It is not a de Polignac number, because 47824157 - 2⁴ = 47824141 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47824157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47824057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23912078 + 23912079.

It is an arithmetic number, because the mean of its divisors is an integer number (23912079).

Almost surely, 2^47824157 is an apocalyptic number.

It is an amenable number.

47824157 is a deficient number, since it is larger than the sum of its proper divisors (1).

47824157 is an equidigital number, since it uses as much as digits as its factorization.

47824157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62720, while the sum is 38.

The square root of 47824157 is about 6915.5012110475. The cubic root of 47824157 is about 362.9797867355.

The spelling of 47824157 in words is "forty-seven million, eight hundred twenty-four thousand, one hundred fifty-seven".