1145021455 has 8 divisors (see below), whose sum is σ = 1374840000. Its totient is φ = 915474336.

The previous prime is 1145021447. The next prime is 1145021467. The reversal of 1145021455 is 5541205411.

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 1145021455 - 2³ = 1145021447 is a prime.

It is a super-2 number, since 2×1145021455² = 2622148264820634050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58455 + ... + 75544.

It is an arithmetic number, because the mean of its divisors is an integer number (171855000).

Almost surely, 2^1145021455 is an apocalyptic number.

1145021455 is a deficient number, since it is larger than the sum of its proper divisors (229818545).

1145021455 is a wasteful number, since it uses less digits than its factorization.

1145021455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135713.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1145021455 is about 33838.1656565482. The cubic root of 1145021455 is about 1046.1754909453.

Adding to 1145021455 its reverse (5541205411), we get a palindrome (6686226866).

The spelling of 1145021455 in words is "one billion, one hundred forty-five million, twenty-one thousand, four hundred fifty-five".