145057233 has 4 divisors (see below), whose sum is σ = 193409648. Its totient is φ = 96704820.

The previous prime is 145057219. The next prime is 145057247. The reversal of 145057233 is 332750541.

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.

It is an interprime number because it is at equal distance from previous prime (145057219) and next prime (145057247).

It is not a de Polignac number, because 145057233 - 2⁶ = 145057169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145057233.

It is not an unprimeable number, because it can be changed into a prime (145057733) 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, 24176203 + ... + 24176208.

It is an arithmetic number, because the mean of its divisors is an integer number (48352412).

Almost surely, 2^145057233 is an apocalyptic number.

It is an amenable number.

145057233 is a deficient number, since it is larger than the sum of its proper divisors (48352415).

145057233 is an equidigital number, since it uses as much as digits as its factorization.

145057233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48352414.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 145057233 is about 12043.9708153084. The cubic root of 145057233 is about 525.4278996730.

The spelling of 145057233 in words is "one hundred forty-five million, fifty-seven thousand, two hundred thirty-three".