548420557 has 2 divisors, whose sum is σ = 548420558. Its totient is φ = 548420556.

The previous prime is 548420519. The next prime is 548420563. The reversal of 548420557 is 755024845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299601481 + 248819076 = 17309^2 + 15774^2 .

It is a cyclic number.

It is not a de Polignac number, because 548420557 - 2⁷ = 548420429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548420567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274210278 + 274210279.

It is an arithmetic number, because the mean of its divisors is an integer number (274210279).

Almost surely, 2^548420557 is an apocalyptic number.

It is an amenable number.

548420557 is a deficient number, since it is larger than the sum of its proper divisors (1).

548420557 is an equidigital number, since it uses as much as digits as its factorization.

548420557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224000, while the sum is 40.

The square root of 548420557 is about 23418.3807510255. The cubic root of 548420557 is about 818.5362330491.

The spelling of 548420557 in words is "five hundred forty-eight million, four hundred twenty thousand, five hundred fifty-seven".