155386093 has 4 divisors (see below), whose sum is σ = 157933468. Its totient is φ = 152838720.

The previous prime is 155386081. The next prime is 155386129. The reversal of 155386093 is 390683551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 390683551 = 1553 ⋅251567.

It can be written as a sum of positive squares in 2 ways, for example, as 52099524 + 103286569 = 7218^2 + 10163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155386093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155386003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1273596 + ... + 1273717.

It is an arithmetic number, because the mean of its divisors is an integer number (39483367).

Almost surely, 2^155386093 is an apocalyptic number.

It is an amenable number.

155386093 is a deficient number, since it is larger than the sum of its proper divisors (2547375).

155386093 is an equidigital number, since it uses as much as digits as its factorization.

155386093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547374.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 155386093 is about 12465.3958220347. The cubic root of 155386093 is about 537.6141807547.

The spelling of 155386093 in words is "one hundred fifty-five million, three hundred eighty-six thousand, ninety-three".