145325553 has 8 divisors (see below), whose sum is σ = 196422048. Its totient is φ = 95556384.

The previous prime is 145325513. The next prime is 145325561. The reversal of 145325553 is 355523541.

It is a happy number.

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

It is not a de Polignac number, because 145325553 - 2⁹ = 145325041 is a prime.

It is a super-2 number, since 2×145325553² = 42239032709511618, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145325513) 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, 331575 + ... + 332012.

It is an arithmetic number, because the mean of its divisors is an integer number (24552756).

Almost surely, 2^145325553 is an apocalyptic number.

It is an amenable number.

145325553 is a deficient number, since it is larger than the sum of its proper divisors (51096495).

145325553 is an equidigital number, since it uses as much as digits as its factorization.

145325553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663663.

The product of its digits is 45000, while the sum is 33.

The square root of 145325553 is about 12055.1048523022. The cubic root of 145325553 is about 525.7516706714.

The spelling of 145325553 in words is "one hundred forty-five million, three hundred twenty-five thousand, five hundred fifty-three".