1145240511 has 4 divisors (see below), whose sum is σ = 1526987352. Its totient is φ = 763493672.

The previous prime is 1145240489. The next prime is 1145240527. The reversal of 1145240511 is 1150425411.

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 1145240511 - 2¹¹ = 1145238463 is a prime.

It is a super-2 number, since 2×1145240511² = 2623151656071082242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145240531) 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, 190873416 + ... + 190873421.

It is an arithmetic number, because the mean of its divisors is an integer number (381746838).

Almost surely, 2^1145240511 is an apocalyptic number.

1145240511 is a deficient number, since it is larger than the sum of its proper divisors (381746841).

1145240511 is an equidigital number, since it uses as much as digits as its factorization.

1145240511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381746840.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1145240511 is about 33841.4023202349. The cubic root of 1145240511 is about 1046.2422018949.

Adding to 1145240511 its reverse (1150425411), we get a palindrome (2295665922).

The spelling of 1145240511 in words is "one billion, one hundred forty-five million, two hundred forty thousand, five hundred eleven".