47015257 has 2 divisors, whose sum is σ = 47015258. Its totient is φ = 47015256.

The previous prime is 47015237. The next prime is 47015263. The reversal of 47015257 is 75251074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42302016 + 4713241 = 6504^2 + 2171^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47015257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47015237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23507628 + 23507629.

It is an arithmetic number, because the mean of its divisors is an integer number (23507629).

Almost surely, 2^47015257 is an apocalyptic number.

It is an amenable number.

47015257 is a deficient number, since it is larger than the sum of its proper divisors (1).

47015257 is an equidigital number, since it uses as much as digits as its factorization.

47015257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 47015257 is about 6856.7672412005. The cubic root of 47015257 is about 360.9216533350.

The spelling of 47015257 in words is "forty-seven million, fifteen thousand, two hundred fifty-seven".