145453233 has 4 divisors (see below), whose sum is σ = 193937648. Its totient is φ = 96968820.

The previous prime is 145453169. The next prime is 145453307. The reversal of 145453233 is 332354541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 332354541 = 3 ⋅110784847.

It is not a de Polignac number, because 145453233 - 2⁶ = 145453169 is a prime.

It is a super-3 number, since 3×145453233³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 145453233.

It is not an unprimeable number, because it can be changed into a prime (145453733) 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, 24242203 + ... + 24242208.

It is an arithmetic number, because the mean of its divisors is an integer number (48484412).

Almost surely, 2^145453233 is an apocalyptic number.

It is an amenable number.

145453233 is a deficient number, since it is larger than the sum of its proper divisors (48484415).

145453233 is an equidigital number, since it uses as much as digits as its factorization.

145453233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48484414.

The product of its digits is 21600, while the sum is 30.

The square root of 145453233 is about 12060.3993714968. The cubic root of 145453233 is about 525.9055970857.

The spelling of 145453233 in words is "one hundred forty-five million, four hundred fifty-three thousand, two hundred thirty-three".