1145235541 has 4 divisors (see below), whose sum is σ = 1146927852. Its totient is φ = 1143543232.

The previous prime is 1145235503. The next prime is 1145235547. The reversal of 1145235541 is 1455325411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 649995025 + 495240516 = 25495^2 + 22254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145235541 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 (1145235547) 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, 845140 + ... + 846493.

It is an arithmetic number, because the mean of its divisors is an integer number (286731963).

Almost surely, 2^1145235541 is an apocalyptic number.

It is an amenable number.

1145235541 is a deficient number, since it is larger than the sum of its proper divisors (1692311).

1145235541 is an equidigital number, since it uses as much as digits as its factorization.

1145235541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692310.

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

The square root of 1145235541 is about 33841.3288893920. The cubic root of 1145235541 is about 1046.2406884337.

The spelling of 1145235541 in words is "one billion, one hundred forty-five million, two hundred thirty-five thousand, five hundred forty-one".