545042551 has 4 divisors (see below), whose sum is σ = 547486912. Its totient is φ = 542598192.

The previous prime is 545042543. The next prime is 545042557. The reversal of 545042551 is 155240545.

545042551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 545042551 - 2³ = 545042543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545042557) 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, 1221846 + ... + 1222291.

It is an arithmetic number, because the mean of its divisors is an integer number (136871728).

Almost surely, 2^545042551 is an apocalyptic number.

545042551 is a deficient number, since it is larger than the sum of its proper divisors (2444361).

545042551 is a wasteful number, since it uses less digits than its factorization.

545042551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444360.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 545042551 is about 23346.1463843607. The cubic root of 545042551 is about 816.8521745642.

The spelling of 545042551 in words is "five hundred forty-five million, forty-two thousand, five hundred fifty-one".