155145493 has 8 divisors (see below), whose sum is σ = 157351680. Its totient is φ = 152945520.

The previous prime is 155145461. The next prime is 155145521. The reversal of 155145493 is 394541551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155145493 - 2⁵ = 155145461 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 (155145413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73296 + ... + 75382.

It is an arithmetic number, because the mean of its divisors is an integer number (19668960).

Almost surely, 2^155145493 is an apocalyptic number.

It is an amenable number.

155145493 is a deficient number, since it is larger than the sum of its proper divisors (2206187).

155145493 is an equidigital number, since it uses as much as digits as its factorization.

155145493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107.

The product of its digits is 54000, while the sum is 37.

The square root of 155145493 is about 12455.7413669360. The cubic root of 155145493 is about 537.3365566148.

The spelling of 155145493 in words is "one hundred fifty-five million, one hundred forty-five thousand, four hundred ninety-three".