145278823 has 2 divisors, whose sum is σ = 145278824. Its totient is φ = 145278822.

The previous prime is 145278799. The next prime is 145278841. The reversal of 145278823 is 328872541.

It is a happy number.

145278823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145278823 is a prime.

It is a super-2 number, since 2×145278823² = 42211872824530658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145272823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72639411 + 72639412.

It is an arithmetic number, because the mean of its divisors is an integer number (72639412).

Almost surely, 2^145278823 is an apocalyptic number.

145278823 is a deficient number, since it is larger than the sum of its proper divisors (1).

145278823 is an equidigital number, since it uses as much as digits as its factorization.

145278823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 40.

The square root of 145278823 is about 12053.1665134105. The cubic root of 145278823 is about 525.6953121282.

The spelling of 145278823 in words is "one hundred forty-five million, two hundred seventy-eight thousand, eight hundred twenty-three".