145240653 has 24 divisors (see below), whose sum is σ = 205450560. Its totient is φ = 91241920.

The previous prime is 145240643. The next prime is 145240681. The reversal of 145240653 is 356042541.

It is not a de Polignac number, because 145240653 - 2⁴ = 145240637 is a prime.

It is a super-3 number, since 3×145240653³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145240653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145240603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112033 + ... + 113321.

It is an arithmetic number, because the mean of its divisors is an integer number (8560440).

Almost surely, 2^145240653 is an apocalyptic number.

It is an amenable number.

145240653 is a deficient number, since it is larger than the sum of its proper divisors (60209907).

145240653 is a wasteful number, since it uses less digits than its factorization.

145240653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409 (or 1386 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 145240653 is about 12051.5830080533. The cubic root of 145240653 is about 525.6492683730.

The spelling of 145240653 in words is "one hundred forty-five million, two hundred forty thousand, six hundred fifty-three".