123545533 has 4 divisors (see below), whose sum is σ = 123901920. Its totient is φ = 123189148.

The previous prime is 123545497. The next prime is 123545537. The reversal of 123545533 is 335545321.

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: 335545321 = 23 ⋅14588927.

It is a cyclic number.

It is not a de Polignac number, because 123545533 - 2¹⁷ = 123414461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123545495 and 123545504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123545537) 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, 177673 + ... + 178366.

It is an arithmetic number, because the mean of its divisors is an integer number (30975480).

Almost surely, 2^123545533 is an apocalyptic number.

It is an amenable number.

123545533 is a deficient number, since it is larger than the sum of its proper divisors (356387).

123545533 is an equidigital number, since it uses as much as digits as its factorization.

123545533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356386.

The product of its digits is 27000, while the sum is 31.

The square root of 123545533 is about 11115.1038231768. The cubic root of 123545533 is about 498.0531399776.

The spelling of 123545533 in words is "one hundred twenty-three million, five hundred forty-five thousand, five hundred thirty-three".