155204263 has 2 divisors, whose sum is σ = 155204264. Its totient is φ = 155204262.

The previous prime is 155204261. The next prime is 155204267. The reversal of 155204263 is 362402551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155204263 - 2¹ = 155204261 is a prime.

Together with 155204261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155204261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77602131 + 77602132.

It is an arithmetic number, because the mean of its divisors is an integer number (77602132).

Almost surely, 2^155204263 is an apocalyptic number.

155204263 is a deficient number, since it is larger than the sum of its proper divisors (1).

155204263 is an equidigital number, since it uses as much as digits as its factorization.

155204263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 155204263 is about 12458.1002965942. The cubic root of 155204263 is about 537.4043967696.

The spelling of 155204263 in words is "one hundred fifty-five million, two hundred four thousand, two hundred sixty-three".