145436553 has 20 divisors (see below), whose sum is σ = 222561108. Its totient is φ = 94590720.

The previous prime is 145436539. The next prime is 145436561. The reversal of 145436553 is 355634541.

145436553 is a `hidden beast` number, since 1 + 4 + 543 + 65 + 53 = 666.

145436553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 72795024 + 72641529 = 8532^2 + 8523^2 .

It is not a de Polignac number, because 145436553 - 2¹² = 145432457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145436453) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18576 + ... + 25217.

Almost surely, 2^145436553 is an apocalyptic number.

It is an amenable number.

145436553 is a deficient number, since it is larger than the sum of its proper divisors (77124555).

145436553 is an equidigital number, since it uses as much as digits as its factorization.

145436553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43846 (or 43837 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 145436553 is about 12059.7078322818. The cubic root of 145436553 is about 525.8854933944.

The spelling of 145436553 in words is "one hundred forty-five million, four hundred thirty-six thousand, five hundred fifty-three".