545751 has 32 divisors (see below), whose sum is σ = 907200. Its totient is φ = 322560.

The previous prime is 545749. The next prime is 545759. The reversal of 545751 is 157545.

It is not a de Polignac number, because 545751 - 2¹ = 545749 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

545751 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13291 + ... + 13331.

It is an arithmetic number, because the mean of its divisors is an integer number (28350).

2⁵⁴⁵⁷⁵¹ is an apocalyptic number.

545751 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

545751 is a deficient number, since it is larger than the sum of its proper divisors (361449).

545751 is a wasteful number, since it uses less digits than its factorization.

545751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 90 counting only the distinct ones).

The product of its digits is 3500, while the sum is 27.

The square root of 545751 is about 738.7496192892. The cubic root of 545751 is about 81.7205937498.

It can be divided in two parts, 545 and 751, that added together give a 4-th power (1296 = 6⁴).

The spelling of 545751 in words is "five hundred forty-five thousand, seven hundred fifty-one".