45418481 has 4 divisors (see below), whose sum is σ = 45510000. Its totient is φ = 45326964.

The previous prime is 45418469. The next prime is 45418517. The reversal of 45418481 is 18481454.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18481454 = 2 ⋅9240727.

It is a cyclic number.

It is not a de Polignac number, because 45418481 - 2¹⁰ = 45417457 is a prime.

It is a super-2 number, since 2×45418481² = 4125676832694722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45418411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45011 + ... + 46008.

It is an arithmetic number, because the mean of its divisors is an integer number (11377500).

Almost surely, 2^45418481 is an apocalyptic number.

It is an amenable number.

45418481 is a deficient number, since it is larger than the sum of its proper divisors (91519).

45418481 is an equidigital number, since it uses as much as digits as its factorization.

45418481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91518.

The product of its digits is 20480, while the sum is 35.

The square root of 45418481 is about 6739.3234823682. The cubic root of 45418481 is about 356.7885169987.

The spelling of 45418481 in words is "forty-five million, four hundred eighteen thousand, four hundred eighty-one".