123251533 has 2 divisors, whose sum is σ = 123251534. Its totient is φ = 123251532.

The previous prime is 123251519. The next prime is 123251543. The reversal of 123251533 is 335152321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115197289 + 8054244 = 10733^2 + 2838^2 .

It is a cyclic number.

It is not a de Polignac number, because 123251533 - 2⁵ = 123251501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123251498 and 123251507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123251543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61625766 + 61625767.

It is an arithmetic number, because the mean of its divisors is an integer number (61625767).

Almost surely, 2^123251533 is an apocalyptic number.

It is an amenable number.

123251533 is a deficient number, since it is larger than the sum of its proper divisors (1).

123251533 is an equidigital number, since it uses as much as digits as its factorization.

123251533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 25.

The square root of 123251533 is about 11101.8706982202. The cubic root of 123251533 is about 497.6577555819.

The spelling of 123251533 in words is "one hundred twenty-three million, two hundred fifty-one thousand, five hundred thirty-three".