47658857 has 2 divisors, whose sum is σ = 47658858. Its totient is φ = 47658856.

The previous prime is 47658847. The next prime is 47658889. The reversal of 47658857 is 75885674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45751696 + 1907161 = 6764^2 + 1381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47658857 is a prime.

It is not a weakly prime, because it can be changed into another prime (47658847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23829428 + 23829429.

It is an arithmetic number, because the mean of its divisors is an integer number (23829429).

Almost surely, 2^47658857 is an apocalyptic number.

It is an amenable number.

47658857 is a deficient number, since it is larger than the sum of its proper divisors (1).

47658857 is an equidigital number, since it uses as much as digits as its factorization.

47658857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1881600, while the sum is 50.

The square root of 47658857 is about 6903.5394545117. The cubic root of 47658857 is about 362.5611013929.

The spelling of 47658857 in words is "forty-seven million, six hundred fifty-eight thousand, eight hundred fifty-seven".