545515043 has 4 divisors (see below), whose sum is σ = 547134120. Its totient is φ = 543895968.

The previous prime is 545515031. The next prime is 545515049. The reversal of 545515043 is 340515545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340515545 = 5 ⋅68103109.

It is a cyclic number.

It is not a de Polignac number, because 545515043 - 2⁶ = 545514979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545515049) 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, 809033 + ... + 809706.

It is an arithmetic number, because the mean of its divisors is an integer number (136783530).

Almost surely, 2^545515043 is an apocalyptic number.

545515043 is a deficient number, since it is larger than the sum of its proper divisors (1619077).

545515043 is a wasteful number, since it uses less digits than its factorization.

545515043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619076.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 545515043 is about 23356.2634640047. The cubic root of 545515043 is about 817.0881467487.

The spelling of 545515043 in words is "five hundred forty-five million, five hundred fifteen thousand, forty-three".