133545478 has 24 divisors (see below), whose sum is σ = 222833016. Its totient is φ = 59529600.

The previous prime is 133545473. The next prime is 133545491. The reversal of 133545478 is 874545331.

It is a self number, because there is not a number n which added to its sum of digits gives 133545478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133545473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60718 + ... + 62878.

It is an arithmetic number, because the mean of its divisors is an integer number (9284709).

Almost surely, 2^133545478 is an apocalyptic number.

133545478 is a deficient number, since it is larger than the sum of its proper divisors (89287538).

133545478 is a wasteful number, since it uses less digits than its factorization.

133545478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280 (or 2227 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 133545478 is about 11556.1878662472. The cubic root of 133545478 is about 511.1437587876.

The spelling of 133545478 in words is "one hundred thirty-three million, five hundred forty-five thousand, four hundred seventy-eight".