45454781 has 8 divisors (see below), whose sum is σ = 46671744. Its totient is φ = 44248320.

The previous prime is 45454733. The next prime is 45454789. The reversal of 45454781 is 18745454.

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 45454781 - 2¹⁴ = 45438397 is a prime.

It is a super-2 number, since 2×45454781² = 4132274231515922, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45454789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6566 + ... + 11576.

It is an arithmetic number, because the mean of its divisors is an integer number (5833968).

Almost surely, 2^45454781 is an apocalyptic number.

It is an amenable number.

45454781 is a deficient number, since it is larger than the sum of its proper divisors (1216963).

45454781 is a wasteful number, since it uses less digits than its factorization.

45454781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5251.

The product of its digits is 89600, while the sum is 38.

The square root of 45454781 is about 6742.0160931282. The cubic root of 45454781 is about 356.8835442065.

The spelling of 45454781 in words is "forty-five million, four hundred fifty-four thousand, seven hundred eighty-one".