153549145 has 4 divisors (see below), whose sum is σ = 184258980. Its totient is φ = 122839312.

The previous prime is 153549101. The next prime is 153549191. The reversal of 153549145 is 541945351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541945351 = 193 ⋅2808007.

It can be written as a sum of positive squares in 2 ways, for example, as 15745024 + 137804121 = 3968^2 + 11739^2 .

It is a cyclic number.

It is not a de Polignac number, because 153549145 - 2¹⁹ = 153024857 is a prime.

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, 15354910 + ... + 15354919.

It is an arithmetic number, because the mean of its divisors is an integer number (46064745).

Almost surely, 2^153549145 is an apocalyptic number.

It is an amenable number.

153549145 is a deficient number, since it is larger than the sum of its proper divisors (30709835).

153549145 is an equidigital number, since it uses as much as digits as its factorization.

153549145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30709834.

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

The square root of 153549145 is about 12391.4948654309. The cubic root of 153549145 is about 535.4872493530.

The spelling of 153549145 in words is "one hundred fifty-three million, five hundred forty-nine thousand, one hundred forty-five".