1145571573 has 16 divisors (see below), whose sum is σ = 1540927296. Its totient is φ = 756992640.

The previous prime is 1145571563. The next prime is 1145571577. The reversal of 1145571573 is 3751755411.

It is not a de Polignac number, because 1145571573 - 2¹³ = 1145563381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145571577) 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 15 ways as a sum of consecutive naturals, for example, 176913 + ... + 183273.

It is an arithmetic number, because the mean of its divisors is an integer number (96307956).

Almost surely, 2^1145571573 is an apocalyptic number.

It is an amenable number.

1145571573 is a deficient number, since it is larger than the sum of its proper divisors (395355723).

1145571573 is a wasteful number, since it uses less digits than its factorization.

1145571573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6884.

The product of its digits is 73500, while the sum is 39.

The square root of 1145571573 is about 33846.2933421076. The cubic root of 1145571573 is about 1046.3430068239.

It can be divided in two parts, 11455 and 71573, that added together give a triangular number (83028 = T₄₀₇).

The spelling of 1145571573 in words is "one billion, one hundred forty-five million, five hundred seventy-one thousand, five hundred seventy-three".