45120505 has 8 divisors (see below), whose sum is σ = 54426312. Its totient is φ = 35908608.

The previous prime is 45120479. The next prime is 45120511. The reversal of 45120505 is 50502154.

It can be written as a sum of positive squares in 4 ways, for example, as 8020224 + 37100281 = 2832^2 + 6091^2 .

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 45120505 - 2⁵ = 45120473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22414 + ... + 24343.

It is an arithmetic number, because the mean of its divisors is an integer number (6803289).

Almost surely, 2^45120505 is an apocalyptic number.

It is an amenable number.

45120505 is a deficient number, since it is larger than the sum of its proper divisors (9305807).

45120505 is a wasteful number, since it uses less digits than its factorization.

45120505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46955.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 45120505 is about 6717.1798397840. The cubic root of 45120505 is about 356.0065462963.

Adding to 45120505 its reverse (50502154), we get a palindrome (95622659).

The spelling of 45120505 in words is "forty-five million, one hundred twenty thousand, five hundred five".