46180921 has 8 divisors (see below), whose sum is σ = 47514440. Its totient is φ = 44851968.

The previous prime is 46180909. The next prime is 46180949. The reversal of 46180921 is 12908164.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17139600 + 29041321 = 4140^2 + 5389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 46180921 - 2¹³ = 46172729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46180961) 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 7 ways as a sum of consecutive naturals, for example, 36715 + ... + 37951.

It is an arithmetic number, because the mean of its divisors is an integer number (5939305).

Almost surely, 2^46180921 is an apocalyptic number.

It is an amenable number.

46180921 is a deficient number, since it is larger than the sum of its proper divisors (1333519).

46180921 is a wasteful number, since it uses less digits than its factorization.

46180921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 46180921 is about 6795.6545674423. The cubic root of 46180921 is about 358.7739179625.

The spelling of 46180921 in words is "forty-six million, one hundred eighty thousand, nine hundred twenty-one".