545023979 has 2 divisors, whose sum is σ = 545023980. Its totient is φ = 545023978.

The previous prime is 545023951. The next prime is 545023991. The reversal of 545023979 is 979320545.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 545023979 - 2²⁰ = 543975403 is a prime.

It is a super-2 number, since 2×545023979² = 594102275369984882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (545023879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272511989 + 272511990.

It is an arithmetic number, because the mean of its divisors is an integer number (272511990).

Almost surely, 2^545023979 is an apocalyptic number.

545023979 is a deficient number, since it is larger than the sum of its proper divisors (1).

545023979 is an equidigital number, since it uses as much as digits as its factorization.

545023979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 545023979 is about 23345.7486279622. The cubic root of 545023979 is about 816.8428965419.

The spelling of 545023979 in words is "five hundred forty-five million, twenty-three thousand, nine hundred seventy-nine".