155801119 has 2 divisors, whose sum is σ = 155801120. Its totient is φ = 155801118.

The previous prime is 155801101. The next prime is 155801131. The reversal of 155801119 is 911108551.

155801119 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (911108551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155801119 - 2¹¹ = 155799071 is a prime.

It is a super-2 number, since 2×155801119² = 48547977363304322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155801819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77900559 + 77900560.

It is an arithmetic number, because the mean of its divisors is an integer number (77900560).

Almost surely, 2^155801119 is an apocalyptic number.

155801119 is a deficient number, since it is larger than the sum of its proper divisors (1).

155801119 is an equidigital number, since it uses as much as digits as its factorization.

155801119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 31.

The square root of 155801119 is about 12482.0318458174. The cubic root of 155801119 is about 538.0923992430.

The spelling of 155801119 in words is "one hundred fifty-five million, eight hundred one thousand, one hundred nineteen".