145355550 has 24 divisors (see below), whose sum is σ = 360482136. Its totient is φ = 38761440.

The previous prime is 145355549. The next prime is 145355603. The reversal of 145355550 is 55553541.

It is a super-2 number, since 2×145355550² = 42256471831605000, which contains 22 as substring.

It is a congruent number.

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, 484369 + ... + 484668.

It is an arithmetic number, because the mean of its divisors is an integer number (15020089).

Almost surely, 2^145355550 is an apocalyptic number.

145355550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145355550 is an abundant number, since it is smaller than the sum of its proper divisors (215126586).

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

145355550 is a wasteful number, since it uses less digits than its factorization.

145355550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969052 (or 969047 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 145355550 is about 12056.3489498272. The cubic root of 145355550 is about 525.7878420755.

The spelling of 145355550 in words is "one hundred forty-five million, three hundred fifty-five thousand, five hundred fifty".