145854281 has 2 divisors, whose sum is σ = 145854282. Its totient is φ = 145854280.

The previous prime is 145854263. The next prime is 145854299. The reversal of 145854281 is 182458541.

It is a balanced prime because it is at equal distance from previous prime (145854263) and next prime (145854299).

It can be written as a sum of positive squares in only one way, i.e., 109914256 + 35940025 = 10484^2 + 5995^2 .

It is a cyclic number.

It is not a de Polignac number, because 145854281 - 2¹⁸ = 145592137 is a prime.

It is a super-2 number, since 2×145854281² = 42546942572053922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145854211) 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 as a sum of consecutive naturals, namely, 72927140 + 72927141.

It is an arithmetic number, because the mean of its divisors is an integer number (72927141).

Almost surely, 2^145854281 is an apocalyptic number.

It is an amenable number.

145854281 is a deficient number, since it is larger than the sum of its proper divisors (1).

145854281 is an equidigital number, since it uses as much as digits as its factorization.

145854281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51200, while the sum is 38.

The square root of 145854281 is about 12077.0145731468. The cubic root of 145854281 is about 526.3885010734.

The spelling of 145854281 in words is "one hundred forty-five million, eight hundred fifty-four thousand, two hundred eighty-one".