545254551 has 16 divisors (see below), whose sum is σ = 808305120. Its totient is φ = 363268800.

The previous prime is 545254517. The next prime is 545254573. The reversal of 545254551 is 155452545.

545254551 is a `hidden beast` number, since 5 + 4 + 52 + 54 + 551 = 666.

It is not a de Polignac number, because 545254551 - 2⁶ = 545254487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545250551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43021 + ... + 54233.

It is an arithmetic number, because the mean of its divisors is an integer number (50519070).

Almost surely, 2^545254551 is an apocalyptic number.

545254551 is a deficient number, since it is larger than the sum of its proper divisors (263050569).

545254551 is a wasteful number, since it uses less digits than its factorization.

545254551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13023 (or 13017 counting only the distinct ones).

The product of its digits is 100000, while the sum is 36.

The square root of 545254551 is about 23350.6863068305. The cubic root of 545254551 is about 816.9580685677.

The spelling of 545254551 in words is "five hundred forty-five million, two hundred fifty-four thousand, five hundred fifty-one".