145413520 has 40 divisors (see below), whose sum is σ = 386385984. Its totient is φ = 49855872.

The previous prime is 145413509. The next prime is 145413523. The reversal of 145413520 is 25314541.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×145413520² = 42290183597580800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145413523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129274 + ... + 130393.

Almost surely, 2^145413520 is an apocalyptic number.

145413520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145413520 is an abundant number, since it is smaller than the sum of its proper divisors (240972464).

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

145413520 is a wasteful number, since it uses less digits than its factorization.

145413520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259687 (or 259681 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 145413520 is about 12058.7528376694. The cubic root of 145413520 is about 525.8577301766.

The spelling of 145413520 in words is "one hundred forty-five million, four hundred thirteen thousand, five hundred twenty".