46851421 has 2 divisors, whose sum is σ = 46851422. Its totient is φ = 46851420.

The previous prime is 46851419. The next prime is 46851457. The reversal of 46851421 is 12415864.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41024025 + 5827396 = 6405^2 + 2414^2 .

It is a cyclic number.

It is not a de Polignac number, because 46851421 - 2¹ = 46851419 is a prime.

Together with 46851419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46851401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23425710 + 23425711.

It is an arithmetic number, because the mean of its divisors is an integer number (23425711).

Almost surely, 2^46851421 is an apocalyptic number.

It is an amenable number.

46851421 is a deficient number, since it is larger than the sum of its proper divisors (1).

46851421 is an equidigital number, since it uses as much as digits as its factorization.

46851421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 31.

The square root of 46851421 is about 6844.8097855236. The cubic root of 46851421 is about 360.5019258991.

The spelling of 46851421 in words is "forty-six million, eight hundred fifty-one thousand, four hundred twenty-one".