1145571572 has 24 divisors (see below), whose sum is σ = 2084665800. Its totient is φ = 550158336.

The previous prime is 1145571563. The next prime is 1145571577. The reversal of 1145571572 is 2751755411.

It can be written as a sum of positive squares in 4 ways, for example, as 155236 + 1145416336 = 394^2 + 33844^2 .

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3197 + ... + 47972.

It is an arithmetic number, because the mean of its divisors is an integer number (86861075).

Almost surely, 2^1145571572 is an apocalyptic number.

It is an amenable number.

1145571572 is a deficient number, since it is larger than the sum of its proper divisors (939094228).

1145571572 is a wasteful number, since it uses less digits than its factorization.

1145571572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51395 (or 51393 counting only the distinct ones).

The product of its digits is 49000, while the sum is 38.

The square root of 1145571572 is about 33846.2933273350. The cubic root of 1145571572 is about 1046.3430065194.

The spelling of 1145571572 in words is "one billion, one hundred forty-five million, five hundred seventy-one thousand, five hundred seventy-two".