145365540 has 24 divisors (see below), whose sum is σ = 407023680. Its totient is φ = 38764128.

The previous prime is 145365529. The next prime is 145365547. The reversal of 145365540 is 45563541.

It is a super-2 number, since 2×145365540² = 42262280438983200, which contains 22 as substring.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (145365547) 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, 1211320 + ... + 1211439.

It is an arithmetic number, because the mean of its divisors is an integer number (16959320).

Almost surely, 2^145365540 is an apocalyptic number.

145365540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145365540 is an abundant number, since it is smaller than the sum of its proper divisors (261658140).

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

145365540 is a wasteful number, since it uses less digits than its factorization.

145365540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422771 (or 2422769 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 145365540 is about 12056.7632472401. The cubic root of 145365540 is about 525.7998872530.

The spelling of 145365540 in words is "one hundred forty-five million, three hundred sixty-five thousand, five hundred forty".