45147145 has 4 divisors (see below), whose sum is σ = 54176580. Its totient is φ = 36117712.

The previous prime is 45147127. The next prime is 45147181. The reversal of 45147145 is 54174154.

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 24571849 + 20575296 = 4957^2 + 4536^2 .

It is a cyclic number.

It is not a de Polignac number, because 45147145 - 2⁷ = 45147017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4514710 + ... + 4514719.

It is an arithmetic number, because the mean of its divisors is an integer number (13544145).

Almost surely, 2^45147145 is an apocalyptic number.

It is an amenable number.

45147145 is a deficient number, since it is larger than the sum of its proper divisors (9029435).

45147145 is an equidigital number, since it uses as much as digits as its factorization.

45147145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9029434.

The product of its digits is 11200, while the sum is 31.

The square root of 45147145 is about 6719.1625222196. The cubic root of 45147145 is about 356.0765968457.

The spelling of 45147145 in words is "forty-five million, one hundred forty-seven thousand, one hundred forty-five".