145532155 has 16 divisors (see below), whose sum is σ = 192953664. Its totient is φ = 104811520.

The previous prime is 145532131. The next prime is 145532171. The reversal of 145532155 is 551235541.

145532155 = 259² + 260² + ... + 768².

It is not a de Polignac number, because 145532155 - 2¹¹ = 145530107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35266 + ... + 39175.

It is an arithmetic number, because the mean of its divisors is an integer number (12059604).

Almost surely, 2^145532155 is an apocalyptic number.

145532155 is a deficient number, since it is larger than the sum of its proper divisors (47421509).

145532155 is a wasteful number, since it uses less digits than its factorization.

145532155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74486.

The product of its digits is 15000, while the sum is 31.

The square root of 145532155 is about 12063.6708758155. The cubic root of 145532155 is about 526.0006975659. Note that the first 3 decimals are identical.

Adding to 145532155 its reverse (551235541), we get a palindrome (696767696).

The spelling of 145532155 in words is "one hundred forty-five million, five hundred thirty-two thousand, one hundred fifty-five".