155412893 has 2 divisors, whose sum is σ = 155412894. Its totient is φ = 155412892.

The previous prime is 155412883. The next prime is 155412931. The reversal of 155412893 is 398214551.

It is a happy number.

155412893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (155412931) can be obtained adding 155412893 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148766809 + 6646084 = 12197^2 + 2578^2 .

It is a cyclic number.

It is not a de Polignac number, because 155412893 - 2¹⁴ = 155396509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155412833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77706446 + 77706447.

It is an arithmetic number, because the mean of its divisors is an integer number (77706447).

Almost surely, 2^155412893 is an apocalyptic number.

It is an amenable number.

155412893 is a deficient number, since it is larger than the sum of its proper divisors (1).

155412893 is an equidigital number, since it uses as much as digits as its factorization.

155412893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 38.

The square root of 155412893 is about 12466.4707515800. The cubic root of 155412893 is about 537.6450870636.

The spelling of 155412893 in words is "one hundred fifty-five million, four hundred twelve thousand, eight hundred ninety-three".