145454550 has 48 divisors (see below), whose sum is σ = 381953232. Its totient is φ = 36505600.

The previous prime is 145454549. The next prime is 145454579. The reversal of 145454550 is 55454541.

It is a super-2 number, since 2×145454550² = 42314052231405000, 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 23 ways as a sum of consecutive naturals, for example, 25971 + ... + 31070.

It is an arithmetic number, because the mean of its divisors is an integer number (7957359).

Almost surely, 2^145454550 is an apocalyptic number.

145454550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145454550 is an abundant number, since it is smaller than the sum of its proper divisors (236498682).

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

145454550 is a wasteful number, since it uses less digits than its factorization.

145454550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57073 (or 57068 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 33.

The square root of 145454550 is about 12060.4539715551. The cubic root of 145454550 is about 525.9071843441.

Subtracting from 145454550 its reverse (55454541), we obtain a palindrome (90000009).

The spelling of 145454550 in words is "one hundred forty-five million, four hundred fifty-four thousand, five hundred fifty".