123253533 has 12 divisors (see below), whose sum is σ = 191727900. Its totient is φ = 75848256.

The previous prime is 123253531. The next prime is 123253541. The reversal of 123253533 is 335352321.

123253533 is a `hidden beast` number, since 123 + 2 + 5 + 3 + 533 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11168964 + 112084569 = 3342^2 + 10587^2 .

It is not a de Polignac number, because 123253533 - 2¹ = 123253531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123253497 and 123253506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123253531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 526608 + ... + 526841.

It is an arithmetic number, because the mean of its divisors is an integer number (15977325).

Almost surely, 2^123253533 is an apocalyptic number.

123253533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123253533 is a deficient number, since it is larger than the sum of its proper divisors (68474367).

123253533 is a wasteful number, since it uses less digits than its factorization.

123253533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053468 (or 1053465 counting only the distinct ones).

The product of its digits is 8100, while the sum is 27.

The square root of 123253533 is about 11101.9607727644. The cubic root of 123253533 is about 497.6604473946.

The spelling of 123253533 in words is "one hundred twenty-three million, two hundred fifty-three thousand, five hundred thirty-three".