145304553 has 16 divisors (see below), whose sum is σ = 198239616. Its totient is φ = 94644480.

The previous prime is 145304539. The next prime is 145304563. The reversal of 145304553 is 355403541.

145304553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145304553 - 2¹² = 145300457 is a prime.

It is a super-2 number, since 2×145304553² = 42226826245059618, which contains 22 as substring.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 145304553.

It is not an unprimeable number, because it can be changed into a prime (145304563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21051 + ... + 27087.

It is an arithmetic number, because the mean of its divisors is an integer number (12389976).

Almost surely, 2^145304553 is an apocalyptic number.

It is an amenable number.

145304553 is a deficient number, since it is larger than the sum of its proper divisors (52935063).

145304553 is a wasteful number, since it uses less digits than its factorization.

145304553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 145304553 is about 12054.2338205296. The cubic root of 145304553 is about 525.7263451942.

The spelling of 145304553 in words is "one hundred forty-five million, three hundred four thousand, five hundred fifty-three".