545248831 has 4 divisors (see below), whose sum is σ = 552928464. Its totient is φ = 537569200.

The previous prime is 545248819. The next prime is 545248849. The reversal of 545248831 is 138842545.

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 545248831 - 2⁷ = 545248703 is a prime.

It is a super-2 number, since 2×545248831² = 594592575413733122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545248861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3839710 + ... + 3839851.

It is an arithmetic number, because the mean of its divisors is an integer number (138232116).

Almost surely, 2^545248831 is an apocalyptic number.

545248831 is a deficient number, since it is larger than the sum of its proper divisors (7679633).

545248831 is an equidigital number, since it uses as much as digits as its factorization.

545248831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7679632.

The product of its digits is 153600, while the sum is 40.

The square root of 545248831 is about 23350.5638261692. The cubic root of 545248831 is about 816.9552117880.

The spelling of 545248831 in words is "five hundred forty-five million, two hundred forty-eight thousand, eight hundred thirty-one".