145553140 has 12 divisors (see below), whose sum is σ = 305661636. Its totient is φ = 58221248.

The previous prime is 145553123. The next prime is 145553171. The reversal of 145553140 is 41355541.

It can be written as a sum of positive squares in 2 ways, for example, as 15319396 + 130233744 = 3914^2 + 11412^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145553099 and 145553108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3638809 + ... + 3638848.

It is an arithmetic number, because the mean of its divisors is an integer number (25471803).

Almost surely, 2^145553140 is an apocalyptic number.

145553140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145553140 is an abundant number, since it is smaller than the sum of its proper divisors (160108496).

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

145553140 is a wasteful number, since it uses less digits than its factorization.

145553140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7277666 (or 7277664 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 145553140 is about 12064.5406045983. The cubic root of 145553140 is about 526.0259785634.

The spelling of 145553140 in words is "one hundred forty-five million, five hundred fifty-three thousand, one hundred forty".