273578045 has 18 divisors (see below), whose sum is σ = 356115438. Its totient is φ = 201671808.

The previous prime is 273578021. The next prime is 273578047. The reversal of 273578045 is 540875372.

It can be written as a sum of positive squares in 9 ways, for example, as 241553764 + 32024281 = 15542^2 + 5659^2 .

It is not a de Polignac number, because 273578045 - 2¹⁰ = 273577021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 273577993 and 273578011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273578047) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 480521 + ... + 481089.

It is an arithmetic number, because the mean of its divisors is an integer number (19784191).

Almost surely, 2^273578045 is an apocalyptic number.

It is an amenable number.

273578045 is a deficient number, since it is larger than the sum of its proper divisors (82537393).

273578045 is an frugal number, since it uses more digits than its factorization.

273578045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 273578045 is about 16540.1948295659. The cubic root of 273578045 is about 649.1729481158.

The spelling of 273578045 in words is "two hundred seventy-three million, five hundred seventy-eight thousand, forty-five".