47297381 has 2 divisors, whose sum is σ = 47297382. Its totient is φ = 47297380.

The previous prime is 47297363. The next prime is 47297401. The reversal of 47297381 is 18379274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40322500 + 6974881 = 6350^2 + 2641^2 .

It is a cyclic number.

It is not a de Polignac number, because 47297381 - 2¹⁰ = 47296357 is a prime.

It is a super-2 number, since 2×47297381² = 4474084498918322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47297311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23648690 + 23648691.

It is an arithmetic number, because the mean of its divisors is an integer number (23648691).

Almost surely, 2^47297381 is an apocalyptic number.

It is an amenable number.

47297381 is a deficient number, since it is larger than the sum of its proper divisors (1).

47297381 is an equidigital number, since it uses as much as digits as its factorization.

47297381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 41.

The square root of 47297381 is about 6877.3091394818. The cubic root of 47297381 is about 361.6421404743.

The spelling of 47297381 in words is "forty-seven million, two hundred ninety-seven thousand, three hundred eighty-one".