545540434 has 4 divisors (see below), whose sum is σ = 818310654. Its totient is φ = 272770216.

The previous prime is 545540423. The next prime is 545540447. The reversal of 545540434 is 434045545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 458174025 + 87366409 = 21405^2 + 9347^2 .

It is a super-2 number, since 2×545540434² = 595228730257816712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 545540434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136385107 + ... + 136385110.

Almost surely, 2^545540434 is an apocalyptic number.

545540434 is a deficient number, since it is larger than the sum of its proper divisors (272770220).

545540434 is a wasteful number, since it uses less digits than its factorization.

545540434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272770219.

The product of its (nonzero) digits is 96000, while the sum is 34.

The square root of 545540434 is about 23356.8070163711. The cubic root of 545540434 is about 817.1008236758.

Adding to 545540434 its reverse (434045545), we get a palindrome (979585979).

The spelling of 545540434 in words is "five hundred forty-five million, five hundred forty thousand, four hundred thirty-four".