545546251 has 2 divisors, whose sum is σ = 545546252. Its totient is φ = 545546250.

The previous prime is 545546219. The next prime is 545546279. The reversal of 545546251 is 152645545.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 545546251 - 2⁵ = 545546219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545546251.

It is not a weakly prime, because it can be changed into another prime (545546291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272773125 + 272773126.

It is an arithmetic number, because the mean of its divisors is an integer number (272773126).

Almost surely, 2^545546251 is an apocalyptic number.

545546251 is a deficient number, since it is larger than the sum of its proper divisors (1).

545546251 is an equidigital number, since it uses as much as digits as its factorization.

545546251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120000, while the sum is 37.

The square root of 545546251 is about 23356.9315407654. The cubic root of 545546251 is about 817.1037278654.

The spelling of 545546251 in words is "five hundred forty-five million, five hundred forty-six thousand, two hundred fifty-one".