45220151 has 4 divisors (see below), whose sum is σ = 45233904. Its totient is φ = 45206400.

The previous prime is 45220117. The next prime is 45220177. The reversal of 45220151 is 15102254.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 15102254 = 2 ⋅7551127.

It is a cyclic number.

It is not a de Polignac number, because 45220151 - 2¹⁸ = 44958007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45220451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286 + ... + 9596.

It is an arithmetic number, because the mean of its divisors is an integer number (11308476).

Almost surely, 2^45220151 is an apocalyptic number.

45220151 is a deficient number, since it is larger than the sum of its proper divisors (13753).

45220151 is an equidigital number, since it uses as much as digits as its factorization.

45220151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13752.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 45220151 is about 6724.5929988364. The cubic root of 45220151 is about 356.2684268298.

The spelling of 45220151 in words is "forty-five million, two hundred twenty thousand, one hundred fifty-one".