1147545 has 24 divisors (see below), whose sum is σ = 2273856. Its totient is φ = 524448.

The previous prime is 1147511. The next prime is 1147561. The reversal of 1147545 is 5457411.

It is a happy number.

1147545 is a `hidden beast` number, since 114 + 7 + 545 = 666.

It is not a de Polignac number, because 1147545 - 2⁷ = 1147417 is a prime.

1147545 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1507 + ... + 2136.

It is an arithmetic number, because the mean of its divisors is an integer number (94744).

2^1147545 is an apocalyptic number.

1147545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1147545 is a deficient number, since it is larger than the sum of its proper divisors (1126311).

1147545 is a wasteful number, since it uses less digits than its factorization.

1147545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661 (or 3658 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 1147545 is about 1071.2352682768. The cubic root of 1147545 is about 104.6943492214.

The spelling of 1147545 in words is "one million, one hundred forty-seven thousand, five hundred forty-five".