145612233 has 48 divisors (see below), whose sum is σ = 234858624. Its totient is φ = 86365440.

The previous prime is 145612217. The next prime is 145612283. The reversal of 145612233 is 332216541.

145612233 is a `hidden beast` number, since 1 + 45 + 612 + 2 + 3 + 3 = 666.

It is not a de Polignac number, because 145612233 - 2⁴ = 145612217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145612197 and 145612206.

It is not an unprimeable number, because it can be changed into a prime (145612213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 518053 + ... + 518333.

It is an arithmetic number, because the mean of its divisors is an integer number (4892888).

Almost surely, 2^145612233 is an apocalyptic number.

145612233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145612233 is a deficient number, since it is larger than the sum of its proper divisors (89246391).

145612233 is a wasteful number, since it uses less digits than its factorization.

145612233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 443 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 145612233 is about 12066.9893925536. The cubic root of 145612233 is about 526.0971558838.

Adding to 145612233 its reverse (332216541), we get a palindrome (477828774).

It can be divided in two parts, 1456 and 12233, that added together give a square (13689 = 117²).

The spelling of 145612233 in words is "one hundred forty-five million, six hundred twelve thousand, two hundred thirty-three".