155455387 has 2 divisors, whose sum is σ = 155455388. Its totient is φ = 155455386.

The previous prime is 155455381. The next prime is 155455393. The reversal of 155455387 is 783554551.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (155455381) and next prime (155455393).

It is a cyclic number.

It is not a de Polignac number, because 155455387 - 2³ = 155455379 is a prime.

It is not a weakly prime, because it can be changed into another prime (155455381) 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, 77727693 + 77727694.

It is an arithmetic number, because the mean of its divisors is an integer number (77727694).

Almost surely, 2^155455387 is an apocalyptic number.

155455387 is a deficient number, since it is larger than the sum of its proper divisors (1).

155455387 is an equidigital number, since it uses as much as digits as its factorization.

155455387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 420000, while the sum is 43.

The square root of 155455387 is about 12468.1749666902. The cubic root of 155455387 is about 537.6940847323.

The spelling of 155455387 in words is "one hundred fifty-five million, four hundred fifty-five thousand, three hundred eighty-seven".