155420383 has 2 divisors, whose sum is σ = 155420384. Its totient is φ = 155420382.

The previous prime is 155420371. The next prime is 155420459. The reversal of 155420383 is 383024551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155420383 - 2⁹ = 155419871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155420333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77710191 + 77710192.

It is an arithmetic number, because the mean of its divisors is an integer number (77710192).

Almost surely, 2^155420383 is an apocalyptic number.

155420383 is a deficient number, since it is larger than the sum of its proper divisors (1).

155420383 is an equidigital number, since it uses as much as digits as its factorization.

155420383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 155420383 is about 12466.7711537511. The cubic root of 155420383 is about 537.6537240498.

The spelling of 155420383 in words is "one hundred fifty-five million, four hundred twenty thousand, three hundred eighty-three".