46445581 has 24 divisors (see below), whose sum is σ = 61621560. Its totient is φ = 34578432.

The previous prime is 46445561. The next prime is 46445611. The reversal of 46445581 is 18554464.

It can be written as a sum of positive squares in 4 ways, for example, as 15476356 + 30969225 = 3934^2 + 5565^2 .

It is not a de Polignac number, because 46445581 - 2⁵ = 46445549 is a prime.

It is a super-2 number, since 2×46445581² = 4314383988855122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 46445581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46445561) 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 in 23 ways as a sum of consecutive naturals, for example, 8685 + ... + 12973.

It is an arithmetic number, because the mean of its divisors is an integer number (2567565).

Almost surely, 2^46445581 is an apocalyptic number.

It is an amenable number.

46445581 is a deficient number, since it is larger than the sum of its proper divisors (15175979).

46445581 is a wasteful number, since it uses less digits than its factorization.

46445581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333 (or 4326 counting only the distinct ones).

The product of its digits is 76800, while the sum is 37.

The square root of 46445581 is about 6815.0994857009. The cubic root of 46445581 is about 359.4579832162.

The spelling of 46445581 in words is "forty-six million, four hundred forty-five thousand, five hundred eighty-one".