145133553 has 8 divisors (see below), whose sum is σ = 194924448. Its totient is φ = 96049184.

The previous prime is 145133543. The next prime is 145133561. The reversal of 145133553 is 355331541.

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 145133553 - 2²⁰ = 144084977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145133553.

It is not an unprimeable number, because it can be changed into a prime (145133503) 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, 176151 + ... + 176972.

It is an arithmetic number, because the mean of its divisors is an integer number (24365556).

Almost surely, 2^145133553 is an apocalyptic number.

It is an amenable number.

145133553 is a deficient number, since it is larger than the sum of its proper divisors (49790895).

145133553 is a wasteful number, since it uses less digits than its factorization.

145133553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353263.

The product of its digits is 13500, while the sum is 30.

The square root of 145133553 is about 12047.1387889407. The cubic root of 145133553 is about 525.5200325636.

The spelling of 145133553 in words is "one hundred forty-five million, one hundred thirty-three thousand, five hundred fifty-three".