47197057 has 2 divisors, whose sum is σ = 47197058. Its totient is φ = 47197056.

The previous prime is 47197043. The next prime is 47197067. The reversal of 47197057 is 75079174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38142976 + 9054081 = 6176^2 + 3009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47197057 is a prime.

It is a super-2 number, since 2×47197057² = 4455124378922498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47197067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23598528 + 23598529.

It is an arithmetic number, because the mean of its divisors is an integer number (23598529).

Almost surely, 2^47197057 is an apocalyptic number.

It is an amenable number.

47197057 is a deficient number, since it is larger than the sum of its proper divisors (1).

47197057 is an equidigital number, since it uses as much as digits as its factorization.

47197057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 47197057 is about 6870.0114264825. The cubic root of 47197057 is about 361.3862625367.

The spelling of 47197057 in words is "forty-seven million, one hundred ninety-seven thousand, fifty-seven".