155140945 has 8 divisors (see below), whose sum is σ = 186238080. Its totient is φ = 124066800.

The previous prime is 155140919. The next prime is 155140967. The reversal of 155140945 is 549041551.

It is a happy number.

155140945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 155140945 - 2¹³ = 155132753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155140945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18120 + ... + 25270.

It is an arithmetic number, because the mean of its divisors is an integer number (23279760).

Almost surely, 2^155140945 is an apocalyptic number.

It is an amenable number.

155140945 is a deficient number, since it is larger than the sum of its proper divisors (31097135).

155140945 is an equidigital number, since it uses as much as digits as its factorization.

155140945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11495.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 155140945 is about 12455.5587991868. The cubic root of 155140945 is about 537.3313059938.

The spelling of 155140945 in words is "one hundred fifty-five million, one hundred forty thousand, nine hundred forty-five".