145330491 has 8 divisors (see below), whose sum is σ = 202199040. Its totient is φ = 92674472.

The previous prime is 145330457. The next prime is 145330529. The reversal of 145330491 is 194033541.

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 145330491 - 2¹⁰ = 145329467 is a prime.

It is a super-2 number, since 2×145330491² = 42241903228602162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145330441) 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 in 7 ways as a sum of consecutive naturals, for example, 1053051 + ... + 1053188.

It is an arithmetic number, because the mean of its divisors is an integer number (25274880).

Almost surely, 2^145330491 is an apocalyptic number.

145330491 is a deficient number, since it is larger than the sum of its proper divisors (56868549).

145330491 is a wasteful number, since it uses less digits than its factorization.

145330491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106265.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 145330491 is about 12055.3096600627. The cubic root of 145330491 is about 525.7576254222.

The spelling of 145330491 in words is "one hundred forty-five million, three hundred thirty thousand, four hundred ninety-one".