145751233 has 4 divisors (see below), whose sum is σ = 145782720. Its totient is φ = 145719748.

The previous prime is 145751213. The next prime is 145751273. The reversal of 145751233 is 332157541.

It is a happy number.

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: 332157541 = 16061 ⋅20681.

It is a cyclic number.

It is not a de Polignac number, because 145751233 - 2⁹ = 145750721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145751195 and 145751204.

It is not an unprimeable number, because it can be changed into a prime (145751213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7285 + ... + 18562.

It is an arithmetic number, because the mean of its divisors is an integer number (36445680).

Almost surely, 2^145751233 is an apocalyptic number.

It is an amenable number.

145751233 is a deficient number, since it is larger than the sum of its proper divisors (31487).

145751233 is an equidigital number, since it uses as much as digits as its factorization.

145751233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31486.

The product of its digits is 12600, while the sum is 31.

The square root of 145751233 is about 12072.7475331840. The cubic root of 145751233 is about 526.2645050288.

The spelling of 145751233 in words is "one hundred forty-five million, seven hundred fifty-one thousand, two hundred thirty-three".