45894981 has 8 divisors (see below), whose sum is σ = 66756384. Its totient is φ = 27815120.

The previous prime is 45894977. The next prime is 45894991. The reversal of 45894981 is 18949854.

45894981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 45894981 - 2² = 45894977 is a prime.

It is a super-2 number, since 2×45894981² = 4212698561980722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 45894981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45894991) 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 in 7 ways as a sum of consecutive naturals, for example, 695346 + ... + 695411.

It is an arithmetic number, because the mean of its divisors is an integer number (8344548).

Almost surely, 2^45894981 is an apocalyptic number.

It is an amenable number.

45894981 is a deficient number, since it is larger than the sum of its proper divisors (20861403).

45894981 is a wasteful number, since it uses less digits than its factorization.

45894981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390771.

The product of its digits is 414720, while the sum is 48.

The square root of 45894981 is about 6774.5834558296. The cubic root of 45894981 is about 358.0319067928.

It can be divided in two parts, 4 and 5894981, that added together give a palindrome (5894985).

The spelling of 45894981 in words is "forty-five million, eight hundred ninety-four thousand, nine hundred eighty-one".