45205147 has 12 divisors (see below), whose sum is σ = 49347760. Its totient is φ = 41164992.

The previous prime is 45205141. The next prime is 45205187. The reversal of 45205147 is 74150254.

It is not a de Polignac number, because 45205147 - 2⁷ = 45205019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45205141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102754 + ... + 103192.

Almost surely, 2^45205147 is an apocalyptic number.

45205147 is a deficient number, since it is larger than the sum of its proper divisors (4142613).

45205147 is an equidigital number, since it uses as much as digits as its factorization.

45205147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 45205147 is about 6723.4772997311. The cubic root of 45205147 is about 356.2290193041.

It can be divided in two parts, 4 and 5205147, that added together give a triangular number (5205151 = T₃₂₂₆).

The spelling of 45205147 in words is "forty-five million, two hundred five thousand, one hundred forty-seven".