145617653 has 12 divisors (see below), whose sum is σ = 154533600. Its totient is φ = 137192616.

The previous prime is 145617643. The next prime is 145617697. The reversal of 145617653 is 356716541.

It is not a de Polignac number, because 145617653 - 2¹⁰ = 145616629 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 (145617643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70826 + ... + 72852.

It is an arithmetic number, because the mean of its divisors is an integer number (12877800).

Almost surely, 2^145617653 is an apocalyptic number.

It is an amenable number.

145617653 is a deficient number, since it is larger than the sum of its proper divisors (8915947).

145617653 is a wasteful number, since it uses less digits than its factorization.

145617653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264 (or 2245 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 145617653 is about 12067.2139700927. The cubic root of 145617653 is about 526.1036832914.

The spelling of 145617653 in words is "one hundred forty-five million, six hundred seventeen thousand, six hundred fifty-three".