145534545 has 48 divisors (see below), whose sum is σ = 273283920. Its totient is φ = 71221248.

The previous prime is 145534541. The next prime is 145534549. The reversal of 145534545 is 545435541.

It is an interprime number because it is at equal distance from previous prime (145534541) and next prime (145534549).

It can be written as a sum of positive squares in 8 ways, for example, as 7800849 + 137733696 = 2793^2 + 11736^2 .

It is not a de Polignac number, because 145534545 - 2² = 145534541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145534541) 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 47 ways as a sum of consecutive naturals, for example, 112261 + ... + 113549.

It is an arithmetic number, because the mean of its divisors is an integer number (5693415).

Almost surely, 2^145534545 is an apocalyptic number.

145534545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145534545 is a deficient number, since it is larger than the sum of its proper divisors (127749375).

145534545 is a wasteful number, since it uses less digits than its factorization.

145534545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506 (or 1503 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 145534545 is about 12063.7699331511. The cubic root of 145534545 is about 526.0035769634.

The spelling of 145534545 in words is "one hundred forty-five million, five hundred thirty-four thousand, five hundred forty-five".