47425181 has 2 divisors, whose sum is σ = 47425182. Its totient is φ = 47425180.

The previous prime is 47425141. The next prime is 47425207. The reversal of 47425181 is 18152474.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46922500 + 502681 = 6850^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 47425181 - 2²² = 43230877 is a prime.

It is a super-2 number, since 2×47425181² = 4498295585765522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47425141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23712590 + 23712591.

It is an arithmetic number, because the mean of its divisors is an integer number (23712591).

Almost surely, 2^47425181 is an apocalyptic number.

It is an amenable number.

47425181 is a deficient number, since it is larger than the sum of its proper divisors (1).

47425181 is an equidigital number, since it uses as much as digits as its factorization.

47425181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 32.

The square root of 47425181 is about 6886.5942961670. The cubic root of 47425181 is about 361.9675728714.

The spelling of 47425181 in words is "forty-seven million, four hundred twenty-five thousand, one hundred eighty-one".