155004823 has 2 divisors, whose sum is σ = 155004824. Its totient is φ = 155004822.

The previous prime is 155004791. The next prime is 155004841. The reversal of 155004823 is 328400551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155004823 - 2⁵ = 155004791 is a prime.

It is a super-2 number, since 2×155004823² = 48052990306522658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155004791 and 155004800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155004893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77502411 + 77502412.

It is an arithmetic number, because the mean of its divisors is an integer number (77502412).

Almost surely, 2^155004823 is an apocalyptic number.

155004823 is a deficient number, since it is larger than the sum of its proper divisors (1).

155004823 is an equidigital number, since it uses as much as digits as its factorization.

155004823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 155004823 is about 12450.0932928232. The cubic root of 155004823 is about 537.1741069719.

The spelling of 155004823 in words is "one hundred fifty-five million, four thousand, eight hundred twenty-three".