155250993 has 8 divisors (see below), whose sum is σ = 210091168. Its totient is φ = 101955744.

The previous prime is 155250983. The next prime is 155251009. The reversal of 155250993 is 399052551.

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

It is not a de Polignac number, because 155250993 - 2⁸ = 155250737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155250983) 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 7 ways as a sum of consecutive naturals, for example, 385996 + ... + 386397.

It is an arithmetic number, because the mean of its divisors is an integer number (26261396).

Almost surely, 2^155250993 is an apocalyptic number.

It is an amenable number.

155250993 is a deficient number, since it is larger than the sum of its proper divisors (54840175).

155250993 is an equidigital number, since it uses as much as digits as its factorization.

155250993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772463.

The product of its (nonzero) digits is 60750, while the sum is 39.

The square root of 155250993 is about 12459.9756420308. The cubic root of 155250993 is about 537.4583265329.

The spelling of 155250993 in words is "one hundred fifty-five million, two hundred fifty thousand, nine hundred ninety-three".