145332403 has 4 divisors (see below), whose sum is σ = 145498248. Its totient is φ = 145166560.

The previous prime is 145332379. The next prime is 145332409. The reversal of 145332403 is 304233541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145332403 - 2⁹ = 145331891 is a prime.

It is a super-2 number, since 2×145332403² = 42243014723508818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145332409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81601 + ... + 83362.

It is an arithmetic number, because the mean of its divisors is an integer number (36374562).

Almost surely, 2^145332403 is an apocalyptic number.

145332403 is a deficient number, since it is larger than the sum of its proper divisors (165845).

145332403 is an equidigital number, since it uses as much as digits as its factorization.

145332403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165844.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 145332403 is about 12055.3889609585. The cubic root of 145332403 is about 525.7599310732.

Adding to 145332403 its reverse (304233541), we get a palindrome (449565944).

It can be divided in two parts, 1453 and 32403, that added together give a square (33856 = 184²).

The spelling of 145332403 in words is "one hundred forty-five million, three hundred thirty-two thousand, four hundred three".