46391591 has 2 divisors, whose sum is σ = 46391592. Its totient is φ = 46391590.

The previous prime is 46391581. The next prime is 46391627. The reversal of 46391591 is 19519364.

46391591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 46391591 - 2¹⁰ = 46390567 is a prime.

It is a super-2 number, since 2×46391591² = 4304359431022562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46391551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23195795 + 23195796.

It is an arithmetic number, because the mean of its divisors is an integer number (23195796).

Almost surely, 2^46391591 is an apocalyptic number.

46391591 is a deficient number, since it is larger than the sum of its proper divisors (1).

46391591 is an equidigital number, since it uses as much as digits as its factorization.

46391591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 38.

The square root of 46391591 is about 6811.1372765493. The cubic root of 46391591 is about 359.3186469521.

The spelling of 46391591 in words is "forty-six million, three hundred ninety-one thousand, five hundred ninety-one".