1145520501 has 8 divisors (see below), whose sum is σ = 1533916800. Its totient is φ = 760402272.

The previous prime is 1145520457. The next prime is 1145520511. The reversal of 1145520501 is 1050255411.

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

It is not a de Polignac number, because 1145520501 - 2¹⁴ = 1145504117 is a prime.

It is a super-2 number, since 2×1145520501² = 2624434436422582002, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145520511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818701 + ... + 820098.

It is an arithmetic number, because the mean of its divisors is an integer number (191739600).

Almost surely, 2^1145520501 is an apocalyptic number.

It is an amenable number.

1145520501 is a deficient number, since it is larger than the sum of its proper divisors (388396299).

1145520501 is a wasteful number, since it uses less digits than its factorization.

1145520501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639035.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1145520501 is about 33845.5388640807. The cubic root of 1145520501 is about 1046.3274571992.

Adding to 1145520501 its reverse (1050255411), we get a palindrome (2195775912).

The spelling of 1145520501 in words is "one billion, one hundred forty-five million, five hundred twenty thousand, five hundred one".