1145312501 has 4 divisors (see below), whose sum is σ = 1152897504. Its totient is φ = 1137727500.

The previous prime is 1145312479. The next prime is 1145312503. The reversal of 1145312501 is 1052135411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1145312501 - 2³⁰ = 71570677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145312503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3792275 + ... + 3792576.

It is an arithmetic number, because the mean of its divisors is an integer number (288224376).

Almost surely, 2^1145312501 is an apocalyptic number.

It is an amenable number.

1145312501 is a deficient number, since it is larger than the sum of its proper divisors (7585003).

1145312501 is an equidigital number, since it uses as much as digits as its factorization.

1145312501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7585002.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1145312501 is about 33842.4659414765. The cubic root of 1145312501 is about 1046.2641237524.

Adding to 1145312501 its reverse (1052135411), we get a palindrome (2197447912).

The spelling of 1145312501 in words is "one billion, one hundred forty-five million, three hundred twelve thousand, five hundred one".