1145122515 has 40 divisors (see below), whose sum is σ = 2061869040. Its totient is φ = 608015808.

The previous prime is 1145122513. The next prime is 1145122591. The reversal of 1145122515 is 5152215411.

It is a happy number.

1145122515 is a `hidden beast` number, since 1 + 145 + 1 + 2 + 2 + 515 = 666.

It is not a de Polignac number, because 1145122515 - 2¹ = 1145122513 is a prime.

It is a super-2 number, since 2×1145122515² = 2622611148719850450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1145122513) 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 39 ways as a sum of consecutive naturals, for example, 86572 + ... + 98918.

It is an arithmetic number, because the mean of its divisors is an integer number (51546726).

Almost surely, 2^1145122515 is an apocalyptic number.

1145122515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1145122515 is a deficient number, since it is larger than the sum of its proper divisors (916746525).

1145122515 is a wasteful number, since it uses less digits than its factorization.

1145122515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12593 (or 12584 counting only the distinct ones).

The product of its digits is 2000, while the sum is 27.

The square root of 1145122515 is about 33839.6589078554. The cubic root of 1145122515 is about 1046.2062686466.

Adding to 1145122515 its reverse (5152215411), we get a palindrome (6297337926).

The spelling of 1145122515 in words is "one billion, one hundred forty-five million, one hundred twenty-two thousand, five hundred fifteen".