145547478 has 24 divisors (see below), whose sum is σ = 317367648. Its totient is φ = 48205872.

The previous prime is 145547477. The next prime is 145547531. The reversal of 145547478 is 874745541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145547477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22926 + ... + 28577.

It is an arithmetic number, because the mean of its divisors is an integer number (13223652).

Almost surely, 2^145547478 is an apocalyptic number.

145547478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145547478 is an abundant number, since it is smaller than the sum of its proper divisors (171820170).

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

145547478 is a wasteful number, since it uses less digits than its factorization.

145547478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51668 (or 51665 counting only the distinct ones).

The product of its digits is 627200, while the sum is 45.

The square root of 145547478 is about 12064.3059477120. The cubic root of 145547478 is about 526.0191576921.

The spelling of 145547478 in words is "one hundred forty-five million, five hundred forty-seven thousand, four hundred seventy-eight".