47511257 has 2 divisors, whose sum is σ = 47511258. Its totient is φ = 47511256.

The previous prime is 47511227. The next prime is 47511281. The reversal of 47511257 is 75211574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47389456 + 121801 = 6884^2 + 349^2 .

It is a cyclic number.

It is not a de Polignac number, because 47511257 - 2¹⁴ = 47494873 is a prime.

It is a super-3 number, since 3×47511257³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47511227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23755628 + 23755629.

It is an arithmetic number, because the mean of its divisors is an integer number (23755629).

Almost surely, 2^47511257 is an apocalyptic number.

It is an amenable number.

47511257 is a deficient number, since it is larger than the sum of its proper divisors (1).

47511257 is an equidigital number, since it uses as much as digits as its factorization.

47511257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9800, while the sum is 32.

The square root of 47511257 is about 6892.8409962801. The cubic root of 47511257 is about 362.1864291096.

The spelling of 47511257 in words is "forty-seven million, five hundred eleven thousand, two hundred fifty-seven".