46158421 has 2 divisors, whose sum is σ = 46158422. Its totient is φ = 46158420.

The previous prime is 46158403. The next prime is 46158443. The reversal of 46158421 is 12485164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24860196 + 21298225 = 4986^2 + 4615^2 .

It is a cyclic number.

It is not a de Polignac number, because 46158421 - 2⁷ = 46158293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46158481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23079210 + 23079211.

It is an arithmetic number, because the mean of its divisors is an integer number (23079211).

Almost surely, 2^46158421 is an apocalyptic number.

It is an amenable number.

46158421 is a deficient number, since it is larger than the sum of its proper divisors (1).

46158421 is an equidigital number, since it uses as much as digits as its factorization.

46158421 is an evil number, because the sum of its binary digits is even.

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

The square root of 46158421 is about 6793.9988960847. The cubic root of 46158421 is about 358.7156419159.

The spelling of 46158421 in words is "forty-six million, one hundred fifty-eight thousand, four hundred twenty-one".