1145044521 has 6 divisors (see below), whose sum is σ = 1653953210. Its totient is φ = 763363008.

The previous prime is 1145044487. The next prime is 1145044529. The reversal of 1145044521 is 1254405411.

1145044521 is a `hidden beast` number, since 114 + 504 + 45 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1141088400 + 3956121 = 33780^2 + 1989^2 .

It is not a de Polignac number, because 1145044521 - 2⁷ = 1145044393 is a prime.

It is a super-2 number, since 2×1145044521² = 2622253910144238882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145044529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63613576 + ... + 63613593.

Almost surely, 2^1145044521 is an apocalyptic number.

It is an amenable number.

1145044521 is a deficient number, since it is larger than the sum of its proper divisors (508908689).

1145044521 is a wasteful number, since it uses less digits than its factorization.

1145044521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127227175 (or 127227172 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1145044521 is about 33838.5064829995. The cubic root of 1145044521 is about 1046.1825158273.

Adding to 1145044521 its reverse (1254405411), we get a palindrome (2399449932).

It can be divided in two parts, 114504 and 4521, that added together give a square (119025 = 345²).

The spelling of 1145044521 in words is "one billion, one hundred forty-five million, forty-four thousand, five hundred twenty-one".