545624257 has 2 divisors, whose sum is σ = 545624258. Its totient is φ = 545624256.

The previous prime is 545624251. The next prime is 545624263. The reversal of 545624257 is 752426545.

It is a balanced prime because it is at equal distance from previous prime (545624251) and next prime (545624263).

It can be written as a sum of positive squares in only one way, i.e., 540283536 + 5340721 = 23244^2 + 2311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545624257 is a prime.

It is not a weakly prime, because it can be changed into another prime (545624251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272812128 + 272812129.

It is an arithmetic number, because the mean of its divisors is an integer number (272812129).

Almost surely, 2^545624257 is an apocalyptic number.

It is an amenable number.

545624257 is a deficient number, since it is larger than the sum of its proper divisors (1).

545624257 is an equidigital number, since it uses as much as digits as its factorization.

545624257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336000, while the sum is 40.

The square root of 545624257 is about 23358.6013493959. The cubic root of 545624257 is about 817.1426710687.

The spelling of 545624257 in words is "five hundred forty-five million, six hundred twenty-four thousand, two hundred fifty-seven".