46071821 has 2 divisors, whose sum is σ = 46071822. Its totient is φ = 46071820.

The previous prime is 46071811. The next prime is 46071847. The reversal of 46071821 is 12817064.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43414921 + 2656900 = 6589^2 + 1630^2 .

It is a cyclic number.

It is not a de Polignac number, because 46071821 - 2⁶ = 46071757 is a prime.

It is a super-2 number, since 2×46071821² = 4245225380512082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46071811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23035910 + 23035911.

It is an arithmetic number, because the mean of its divisors is an integer number (23035911).

Almost surely, 2^46071821 is an apocalyptic number.

It is an amenable number.

46071821 is a deficient number, since it is larger than the sum of its proper divisors (1).

46071821 is an equidigital number, since it uses as much as digits as its factorization.

46071821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 46071821 is about 6787.6226324097. The cubic root of 46071821 is about 358.4911670057.

Adding to 46071821 its reverse (12817064), we get a palindrome (58888885).

The spelling of 46071821 in words is "forty-six million, seventy-one thousand, eight hundred twenty-one".