45417121 has 4 divisors (see below), whose sum is σ = 45465732. Its totient is φ = 45368512.

The previous prime is 45417107. The next prime is 45417191. The reversal of 45417121 is 12171454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26832400 + 18584721 = 5180^2 + 4311^2 .

It is a cyclic number.

It is not a de Polignac number, because 45417121 - 2¹³ = 45408929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45417191) 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, 22876 + ... + 24781.

It is an arithmetic number, because the mean of its divisors is an integer number (11366433).

Almost surely, 2^45417121 is an apocalyptic number.

It is an amenable number.

45417121 is a deficient number, since it is larger than the sum of its proper divisors (48611).

45417121 is an equidigital number, since it uses as much as digits as its factorization.

45417121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48610.

The product of its digits is 1120, while the sum is 25.

The square root of 45417121 is about 6739.2225812775. Note that the first 3 decimals coincide. The cubic root of 45417121 is about 356.7849557669.

Adding to 45417121 its reverse (12171454), we get a palindrome (57588575).

The spelling of 45417121 in words is "forty-five million, four hundred seventeen thousand, one hundred twenty-one".