1145254513 has 8 divisors (see below), whose sum is σ = 1240167656. Its totient is φ = 1051315200.

The previous prime is 1145254489. The next prime is 1145254529. The reversal of 1145254513 is 3154525411.

It can be written as a sum of positive squares in 4 ways, for example, as 30162064 + 1115092449 = 5492^2 + 33393^2 .

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

It is not a de Polignac number, because 1145254513 - 2²¹ = 1143157361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145254543) 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, 241008 + ... + 245713.

It is an arithmetic number, because the mean of its divisors is an integer number (155020957).

Almost surely, 2^1145254513 is an apocalyptic number.

1145254513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1145254513 is a deficient number, since it is larger than the sum of its proper divisors (94913143).

1145254513 is a wasteful number, since it uses less digits than its factorization.

1145254513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486915.

The product of its digits is 12000, while the sum is 31.

The square root of 1145254513 is about 33841.6091963724. The cubic root of 1145254513 is about 1046.2464657514.

Adding to 1145254513 its reverse (3154525411), we get a palindrome (4299779924).

The spelling of 1145254513 in words is "one billion, one hundred forty-five million, two hundred fifty-four thousand, five hundred thirteen".