1145145553 has 8 divisors (see below), whose sum is σ = 1176521472. Its totient is φ = 1114061856.

The previous prime is 1145145511. The next prime is 1145145557. The reversal of 1145145553 is 3555415411.

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 1145145553 - 2¹³ = 1145137361 is a prime.

It is a super-2 number, since 2×1145145553² = 2622716675111351618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145145557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65100 + ... + 80797.

It is an arithmetic number, because the mean of its divisors is an integer number (147065184).

Almost surely, 2^1145145553 is an apocalyptic number.

It is an amenable number.

1145145553 is a deficient number, since it is larger than the sum of its proper divisors (31375919).

1145145553 is a wasteful number, since it uses less digits than its factorization.

1145145553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146111.

The product of its digits is 30000, while the sum is 34.

The square root of 1145145553 is about 33839.9993055555. Note that the first 3 decimals coincide. The cubic root of 1145145553 is about 1046.2132845883.

The spelling of 1145145553 in words is "one billion, one hundred forty-five million, one hundred forty-five thousand, five hundred fifty-three".