145415144 has 48 divisors (see below), whose sum is σ = 335840580. Its totient is φ = 58652160.

The previous prime is 145415129. The next prime is 145415159. The reversal of 145415144 is 441514541.

It is an interprime number because it is at equal distance from previous prime (145415129) and next prime (145415159).

It can be written as a sum of positive squares in 2 ways, for example, as 139948900 + 5466244 = 11830^2 + 2338^2 .

It is a super-2 number, since 2×145415144² = 42291128209081472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4247 + ... + 17574.

Almost surely, 2^145415144 is an apocalyptic number.

145415144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

145415144 is an abundant number, since it is smaller than the sum of its proper divisors (190425436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145415144 is a wasteful number, since it uses less digits than its factorization.

145415144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21858 (or 21847 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

The square root of 145415144 is about 12058.8201744615. The cubic root of 145415144 is about 525.8596877887.

Adding to 145415144 its reverse (441514541), we get a palindrome (586929685).

The spelling of 145415144 in words is "one hundred forty-five million, four hundred fifteen thousand, one hundred forty-four".