47146681 has 2 divisors, whose sum is σ = 47146682. Its totient is φ = 47146680.

The previous prime is 47146669. The next prime is 47146709. The reversal of 47146681 is 18664174.

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., 28302400 + 18844281 = 5320^2 + 4341^2 .

It is a cyclic number.

It is not a de Polignac number, because 47146681 - 2¹⁹ = 46622393 is a prime.

It is a super-2 number, since 2×47146681² = 4445619058631522, which contains 22 as substring.

It is equal to p_2839960 and since 47146681 and 2839960 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47146681.

It is not a weakly prime, because it can be changed into another prime (47146601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23573340 + 23573341.

It is an arithmetic number, because the mean of its divisors is an integer number (23573341).

Almost surely, 2^47146681 is an apocalyptic number.

It is an amenable number.

47146681 is a deficient number, since it is larger than the sum of its proper divisors (1).

47146681 is an equidigital number, since it uses as much as digits as its factorization.

47146681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 47146681 is about 6866.3440781831. The cubic root of 47146681 is about 361.2576409905.

The spelling of 47146681 in words is "forty-seven million, one hundred forty-six thousand, six hundred eighty-one".