145273779 has 18 divisors (see below), whose sum is σ = 244100220. Its totient is φ = 83013336.

The previous prime is 145273771. The next prime is 145273787. The reversal of 145273779 is 977372541.

145273779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145273771) and next prime (145273787).

It is not a de Polignac number, because 145273779 - 2³ = 145273771 is a prime.

It is a super-2 number, since 2×145273779² = 42208941729881682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145273771) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 164269 + ... + 165150.

Almost surely, 2^145273779 is an apocalyptic number.

145273779 is a deficient number, since it is larger than the sum of its proper divisors (98826441).

145273779 is a wasteful number, since it uses less digits than its factorization.

145273779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329439 (or 329429 counting only the distinct ones).

The product of its digits is 370440, while the sum is 45.

The square root of 145273779 is about 12052.9572719727. The cubic root of 145273779 is about 525.6892281081.

The spelling of 145273779 in words is "one hundred forty-five million, two hundred seventy-three thousand, seven hundred seventy-nine".