145445726 has 4 divisors (see below), whose sum is σ = 218168592. Its totient is φ = 72722862.

The previous prime is 145445723. The next prime is 145445731. The reversal of 145445726 is 627544541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 627544541 = 13 ⋅48272657.

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 145445726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145445723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36361430 + ... + 36361433.

It is an arithmetic number, because the mean of its divisors is an integer number (54542148).

Almost surely, 2^145445726 is an apocalyptic number.

145445726 is a deficient number, since it is larger than the sum of its proper divisors (72722866).

145445726 is an equidigital number, since it uses as much as digits as its factorization.

145445726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72722865.

The product of its digits is 134400, while the sum is 38.

The square root of 145445726 is about 12060.0881422981. The cubic root of 145445726 is about 525.8965494096.

The spelling of 145445726 in words is "one hundred forty-five million, four hundred forty-five thousand, seven hundred twenty-six".