145152549 has 6 divisors (see below), whose sum is σ = 209664806. Its totient is φ = 96768360.

The previous prime is 145152523. The next prime is 145152583. The reversal of 145152549 is 945251541.

145152549 is a `hidden beast` number, since 14 + 51 + 52 + 549 = 666.

It can be written as a sum of positive squares in only one way, i.e., 144720900 + 431649 = 12030^2 + 657^2 .

It is not a de Polignac number, because 145152549 - 2⁷ = 145152421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145152599) 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 5 ways as a sum of consecutive naturals, for example, 8064022 + ... + 8064039.

Almost surely, 2^145152549 is an apocalyptic number.

It is an amenable number.

145152549 is a deficient number, since it is larger than the sum of its proper divisors (64512257).

145152549 is a wasteful number, since it uses less digits than its factorization.

145152549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16128067 (or 16128064 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 145152549 is about 12047.9271661145. The cubic root of 145152549 is about 525.5429593618.

The spelling of 145152549 in words is "one hundred forty-five million, one hundred fifty-two thousand, five hundred forty-nine".