155094019 has 2 divisors, whose sum is σ = 155094020. Its totient is φ = 155094018.

The previous prime is 155094007. The next prime is 155094061. The reversal of 155094019 is 910490551.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155094019 - 2⁵ = 155093987 is a prime.

It is a super-2 number, since 2×155094019² = 48108309459144722, which contains 22 as substring.

It is equal to p_8714554 and since 155094019 and 8714554 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (155094089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77547009 + 77547010.

It is an arithmetic number, because the mean of its divisors is an integer number (77547010).

Almost surely, 2^155094019 is an apocalyptic number.

155094019 is a deficient number, since it is larger than the sum of its proper divisors (1).

155094019 is an equidigital number, since it uses as much as digits as its factorization.

155094019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 155094019 is about 12453.6749194766. The cubic root of 155094019 is about 537.2771243988.

The spelling of 155094019 in words is "one hundred fifty-five million, ninety-four thousand, nineteen".