145830481 has 8 divisors (see below), whose sum is σ = 149641128. Its totient is φ = 142032000.

The previous prime is 145830469. The next prime is 145830493. The reversal of 145830481 is 184038541.

It is an interprime number because it is at equal distance from previous prime (145830469) and next prime (145830493).

It can be written as a sum of positive squares in 4 ways, for example, as 4601025 + 141229456 = 2145^2 + 11884^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145830481 - 2⁷ = 145830353 is a prime.

It is a super-2 number, since 2×145830481² = 42533058377382722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145830781) 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 7 ways as a sum of consecutive naturals, for example, 24411 + ... + 29791.

It is an arithmetic number, because the mean of its divisors is an integer number (18705141).

Almost surely, 2^145830481 is an apocalyptic number.

It is an amenable number.

145830481 is a deficient number, since it is larger than the sum of its proper divisors (3810647).

145830481 is an equidigital number, since it uses as much as digits as its factorization.

145830481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6083.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 145830481 is about 12076.0291900939. The cubic root of 145830481 is about 526.3598680941.

The spelling of 145830481 in words is "one hundred forty-five million, eight hundred thirty thousand, four hundred eighty-one".