155119001 has 2 divisors, whose sum is σ = 155119002. Its totient is φ = 155119000.

The previous prime is 155118989. The next prime is 155119007. The reversal of 155119001 is 100911551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110229001 + 44890000 = 10499^2 + 6700^2 .

It is a cyclic number.

It is not a de Polignac number, because 155119001 - 2⁶ = 155118937 is a prime.

It is not a weakly prime, because it can be changed into another prime (155119007) 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, 77559500 + 77559501.

It is an arithmetic number, because the mean of its divisors is an integer number (77559501).

Almost surely, 2^155119001 is an apocalyptic number.

It is an amenable number.

155119001 is a deficient number, since it is larger than the sum of its proper divisors (1).

155119001 is an equidigital number, since it uses as much as digits as its factorization.

155119001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225, while the sum is 23.

The square root of 155119001 is about 12454.6778762038. The cubic root of 155119001 is about 537.3059704209.

The spelling of 155119001 in words is "one hundred fifty-five million, one hundred nineteen thousand, one".