545250138 has 8 divisors (see below), whose sum is σ = 1090500288. Its totient is φ = 181750044.

The previous prime is 545250137. The next prime is 545250143. The reversal of 545250138 is 831052545.

It is a sphenic number, since it is the product of 3 distinct primes.

545250138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 545250099 and 545250108.

It is not an unprimeable number, because it can be changed into a prime (545250137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45437506 + ... + 45437517.

It is an arithmetic number, because the mean of its divisors is an integer number (136312536).

Almost surely, 2^545250138 is an apocalyptic number.

545250138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

545250138 is a wasteful number, since it uses less digits than its factorization.

545250138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90875028.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 545250138 is about 23350.5918126286. The cubic root of 545250138 is about 816.9558645539.

The spelling of 545250138 in words is "five hundred forty-five million, two hundred fifty thousand, one hundred thirty-eight".