145020553 has 8 divisors (see below), whose sum is σ = 150486336. Its totient is φ = 139650000.

The previous prime is 145020541. The next prime is 145020569. The reversal of 145020553 is 355020541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145020553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145020583) 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, 20698 + ... + 26803.

It is an arithmetic number, because the mean of its divisors is an integer number (18810792).

Almost surely, 2^145020553 is an apocalyptic number.

It is an amenable number.

145020553 is a deficient number, since it is larger than the sum of its proper divisors (5465783).

145020553 is an equidigital number, since it uses as much as digits as its factorization.

145020553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47615.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 145020553 is about 12042.4479654263. The cubic root of 145020553 is about 525.3836083735.

The spelling of 145020553 in words is "one hundred forty-five million, twenty thousand, five hundred fifty-three".