47451857 has 2 divisors, whose sum is σ = 47451858. Its totient is φ = 47451856.

The previous prime is 47451827. The next prime is 47451893. The reversal of 47451857 is 75815474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31259281 + 16192576 = 5591^2 + 4024^2 .

It is a cyclic number.

It is not a de Polignac number, because 47451857 - 2⁸ = 47451601 is a prime.

It is not a weakly prime, because it can be changed into another prime (47451827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23725928 + 23725929.

It is an arithmetic number, because the mean of its divisors is an integer number (23725929).

Almost surely, 2^47451857 is an apocalyptic number.

It is an amenable number.

47451857 is a deficient number, since it is larger than the sum of its proper divisors (1).

47451857 is an equidigital number, since it uses as much as digits as its factorization.

47451857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156800, while the sum is 41.

The square root of 47451857 is about 6888.5308303005. The cubic root of 47451857 is about 362.0354273804.

The spelling of 47451857 in words is "forty-seven million, four hundred fifty-one thousand, eight hundred fifty-seven".