1145253541 has 8 divisors (see below), whose sum is σ = 1151549784. Its totient is φ = 1138974720.

The previous prime is 1145253509. The next prime is 1145253581. The reversal of 1145253541 is 1453525411.

It can be written as a sum of positive squares in 4 ways, for example, as 97436641 + 1047816900 = 9871^2 + 32370^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1145253541 - 2⁵ = 1145253509 is a prime.

It is a super-3 number, since 3×1145253541³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145253581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140325 + ... + 148261.

It is an arithmetic number, because the mean of its divisors is an integer number (143943723).

Almost surely, 2^1145253541 is an apocalyptic number.

It is an amenable number.

1145253541 is a deficient number, since it is larger than the sum of its proper divisors (6296243).

1145253541 is an equidigital number, since it uses as much as digits as its factorization.

1145253541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8711.

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

The square root of 1145253541 is about 33841.5948353502. The cubic root of 1145253541 is about 1046.2461697613.

Adding to 1145253541 its reverse (1453525411), we get a palindrome (2598778952).

The spelling of 1145253541 in words is "one billion, one hundred forty-five million, two hundred fifty-three thousand, five hundred forty-one".