145313540 has 24 divisors (see below), whose sum is σ = 318427200. Its totient is φ = 55598048.

The previous prime is 145313521. The next prime is 145313551. The reversal of 145313540 is 45313541.

It is a super-2 number, since 2×145313540² = 42232049814663200, which contains 22 as substring.

It is an unprimeable number.

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, 157490 + ... + 158409.

It is an arithmetic number, because the mean of its divisors is an integer number (13267800).

Almost surely, 2^145313540 is an apocalyptic number.

145313540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145313540 is an abundant number, since it is smaller than the sum of its proper divisors (173113660).

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

145313540 is a wasteful number, since it uses less digits than its factorization.

145313540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315931 (or 315929 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 145313540 is about 12054.6065883545. The cubic root of 145313540 is about 525.7371835912.

Subtracting from 145313540 its reverse (45313541), we obtain a palindrome (99999999).

The spelling of 145313540 in words is "one hundred forty-five million, three hundred thirteen thousand, five hundred forty".