1545155121 has 8 divisors (see below), whose sum is σ = 2063817184. Its totient is φ = 1028298240.

The previous prime is 1545155093. The next prime is 1545155123. The reversal of 1545155121 is 1215515451.

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

It is not a de Polignac number, because 1545155121 - 2¹⁰ = 1545154097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1545155123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449296 + ... + 452721.

It is an arithmetic number, because the mean of its divisors is an integer number (257977148).

Almost surely, 2^1545155121 is an apocalyptic number.

It is an amenable number.

1545155121 is a deficient number, since it is larger than the sum of its proper divisors (518662063).

1545155121 is an equidigital number, since it uses as much as digits as its factorization.

1545155121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902591.

The product of its digits is 5000, while the sum is 30.

The square root of 1545155121 is about 39308.4611884006. The cubic root of 1545155121 is about 1156.0874726277.

The spelling of 1545155121 in words is "one billion, five hundred forty-five million, one hundred fifty-five thousand, one hundred twenty-one".