1545155 has 4 divisors (see below), whose sum is σ = 1854192. Its totient is φ = 1236120.

The previous prime is 1545143. The next prime is 1545169. The reversal of 1545155 is 5515451.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1545155 - 2⁴ = 1545139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154511 + ... + 154520.

It is an arithmetic number, because the mean of its divisors is an integer number (463548).

2^1545155 is an apocalyptic number.

1545155 is a deficient number, since it is larger than the sum of its proper divisors (309037).

1545155 is an equidigital number, since it uses as much as digits as its factorization.

1545155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309036.

The product of its digits is 2500, while the sum is 26.

The square root of 1545155 is about 1243.0426380459. The cubic root of 1545155 is about 115.6087442450.

The spelling of 1545155 in words is "one million, five hundred forty-five thousand, one hundred fifty-five".