145271530 has 16 divisors (see below), whose sum is σ = 275251680. Its totient is φ = 55050192.

The previous prime is 145271491. The next prime is 145271531. The reversal of 145271530 is 35172541.

It is a happy number.

It is a super-2 number, since 2×145271530² = 42207634857081800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145271531) 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, 382104 + ... + 382483.

It is an arithmetic number, because the mean of its divisors is an integer number (17203230).

Almost surely, 2^145271530 is an apocalyptic number.

145271530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145271530 is a deficient number, since it is larger than the sum of its proper divisors (129980150).

145271530 is a wasteful number, since it uses less digits than its factorization.

145271530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764613.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 145271530 is about 12052.8639750061. The cubic root of 145271530 is about 525.6865153424.

The spelling of 145271530 in words is "one hundred forty-five million, two hundred seventy-one thousand, five hundred thirty".