145717653 has 8 divisors (see below), whose sum is σ = 196473600. Its totient is φ = 96053408.

The previous prime is 145717643. The next prime is 145717657. The reversal of 145717653 is 356717541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145717653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145717657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272613 + ... + 273146.

It is an arithmetic number, because the mean of its divisors is an integer number (24559200).

Almost surely, 2^145717653 is an apocalyptic number.

It is an amenable number.

145717653 is a deficient number, since it is larger than the sum of its proper divisors (50755947).

145717653 is an equidigital number, since it uses as much as digits as its factorization.

145717653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545851.

The product of its digits is 88200, while the sum is 39.

The square root of 145717653 is about 12071.3567174531. The cubic root of 145717653 is about 526.2240861153.

It can be divided in two parts, 1457 and 17653, that added together give a triangular number (19110 = T₁₉₅).

The spelling of 145717653 in words is "one hundred forty-five million, seven hundred seventeen thousand, six hundred fifty-three".