145974569 has 8 divisors (see below), whose sum is σ = 158246592. Its totient is φ = 133851600.

The previous prime is 145974559. The next prime is 145974571. The reversal of 145974569 is 965479541.

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

It is a cyclic number.

It is not a de Polignac number, because 145974569 - 2²⁰ = 144925993 is a prime.

It is a super-2 number, since 2×145974569² = 42617149589471522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145974539) 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 7 ways as a sum of consecutive naturals, for example, 35219 + ... + 39144.

It is an arithmetic number, because the mean of its divisors is an integer number (19780824).

Almost surely, 2^145974569 is an apocalyptic number.

It is an amenable number.

145974569 is a deficient number, since it is larger than the sum of its proper divisors (12272023).

145974569 is a wasteful number, since it uses less digits than its factorization.

145974569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74527.

The product of its digits is 1360800, while the sum is 50.

The square root of 145974569 is about 12081.9935854974. The cubic root of 145974569 is about 526.5331678854.

The spelling of 145974569 in words is "one hundred forty-five million, nine hundred seventy-four thousand, five hundred sixty-nine".