47173957 has 2 divisors, whose sum is σ = 47173958. Its totient is φ = 47173956.

The previous prime is 47173939. The next prime is 47174009. The reversal of 47173957 is 75937174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45239076 + 1934881 = 6726^2 + 1391^2 .

It is a cyclic number.

It is not a de Polignac number, because 47173957 - 2²³ = 38785349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47173937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23586978 + 23586979.

It is an arithmetic number, because the mean of its divisors is an integer number (23586979).

Almost surely, 2^47173957 is an apocalyptic number.

It is an amenable number.

47173957 is a deficient number, since it is larger than the sum of its proper divisors (1).

47173957 is an equidigital number, since it uses as much as digits as its factorization.

47173957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185220, while the sum is 43.

The square root of 47173957 is about 6868.3300008081. The cubic root of 47173957 is about 361.3272942767.

The spelling of 47173957 in words is "forty-seven million, one hundred seventy-three thousand, nine hundred fifty-seven".