145769827 has 4 divisors (see below), whose sum is σ = 166594096. Its totient is φ = 124945560.

The previous prime is 145769821. The next prime is 145769839. The reversal of 145769827 is 728967541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 728967541 = 8669 ⋅84089.

It is a cyclic number.

It is not a de Polignac number, because 145769827 - 2¹¹ = 145767779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145769821) 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 3 ways as a sum of consecutive naturals, for example, 10412124 + ... + 10412137.

It is an arithmetic number, because the mean of its divisors is an integer number (41648524).

Almost surely, 2^145769827 is an apocalyptic number.

145769827 is a deficient number, since it is larger than the sum of its proper divisors (20824269).

145769827 is an equidigital number, since it uses as much as digits as its factorization.

145769827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20824268.

The product of its digits is 846720, while the sum is 49.

The square root of 145769827 is about 12073.5175901640. The cubic root of 145769827 is about 526.2868832182.

The spelling of 145769827 in words is "one hundred forty-five million, seven hundred sixty-nine thousand, eight hundred twenty-seven".