1145240051 has 4 divisors (see below), whose sum is σ = 1145882712. Its totient is φ = 1144597392.

The previous prime is 1145240009. The next prime is 1145240053. The reversal of 1145240051 is 1500425411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1145240051 - 2¹⁰ = 1145239027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1145239999 and 1145240026.

It is not an unprimeable number, because it can be changed into a prime (1145240053) 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, 318650 + ... + 322223.

It is an arithmetic number, because the mean of its divisors is an integer number (286470678).

Almost surely, 2^1145240051 is an apocalyptic number.

1145240051 is a deficient number, since it is larger than the sum of its proper divisors (642661).

1145240051 is an equidigital number, since it uses as much as digits as its factorization.

1145240051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642660.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1145240051 is about 33841.3955238256. The cubic root of 1145240051 is about 1046.2420618161.

Adding to 1145240051 its reverse (1500425411), we get a palindrome (2645665462).

The spelling of 1145240051 in words is "one billion, one hundred forty-five million, two hundred forty thousand, fifty-one".