155504263 has 2 divisors, whose sum is σ = 155504264. Its totient is φ = 155504262.

The previous prime is 155504231. The next prime is 155504291. The reversal of 155504263 is 362405551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155504263 - 2⁵ = 155504231 is a prime.

It is a super-2 number, since 2×155504263² = 48363151622346338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155504213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77752131 + 77752132.

It is an arithmetic number, because the mean of its divisors is an integer number (77752132).

Almost surely, 2^155504263 is an apocalyptic number.

155504263 is a deficient number, since it is larger than the sum of its proper divisors (1).

155504263 is an equidigital number, since it uses as much as digits as its factorization.

155504263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 155504263 is about 12470.1348428956. The cubic root of 155504263 is about 537.7504301205.

The spelling of 155504263 in words is "one hundred fifty-five million, five hundred four thousand, two hundred sixty-three".