45147745 has 8 divisors (see below), whose sum is σ = 54541800. Its totient is φ = 35875200.

The previous prime is 45147737. The next prime is 45147757. The reversal of 45147745 is 54774154.

It can be written as a sum of positive squares in 4 ways, for example, as 6806881 + 38340864 = 2609^2 + 6192^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45147745 - 2³ = 45147737 is a prime.

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, 29556 + ... + 31045.

It is an arithmetic number, because the mean of its divisors is an integer number (6817725).

Almost surely, 2^45147745 is an apocalyptic number.

It is an amenable number.

45147745 is a deficient number, since it is larger than the sum of its proper divisors (9394055).

45147745 is a wasteful number, since it uses less digits than its factorization.

45147745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60755.

The product of its digits is 78400, while the sum is 37.

The square root of 45147745 is about 6719.2071704927. The cubic root of 45147745 is about 356.0781742434.

The spelling of 45147745 in words is "forty-five million, one hundred forty-seven thousand, seven hundred forty-five".