47577857 has 2 divisors, whose sum is σ = 47577858. Its totient is φ = 47577856.

The previous prime is 47577853. The next prime is 47577889. The reversal of 47577857 is 75877574.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43771456 + 3806401 = 6616^2 + 1951^2 .

It is a cyclic number.

It is not a de Polignac number, because 47577857 - 2² = 47577853 is a prime.

It is not a weakly prime, because it can be changed into another prime (47577853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23788928 + 23788929.

It is an arithmetic number, because the mean of its divisors is an integer number (23788929).

Almost surely, 2^47577857 is an apocalyptic number.

It is an amenable number.

47577857 is a deficient number, since it is larger than the sum of its proper divisors (1).

47577857 is an equidigital number, since it uses as much as digits as its factorization.

47577857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920800, while the sum is 50.

The square root of 47577857 is about 6897.6704038393. The cubic root of 47577857 is about 362.3555844878.

The spelling of 47577857 in words is "forty-seven million, five hundred seventy-seven thousand, eight hundred fifty-seven".