557180260421 has 2 divisors, whose sum is σ = 557180260422. Its totient is φ = 557180260420.

The previous prime is 557180260381. The next prime is 557180260423. The reversal of 557180260421 is 124062081755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 409489927396 + 147690333025 = 639914^2 + 384305^2 .

It is a cyclic number.

It is not a de Polignac number, because 557180260421 - 2¹⁴ = 557180244037 is a prime.

Together with 557180260423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557180260423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278590130210 + 278590130211.

It is an arithmetic number, because the mean of its divisors is an integer number (278590130211).

Almost surely, 2^557180260421 is an apocalyptic number.

It is an amenable number.

557180260421 is a deficient number, since it is larger than the sum of its proper divisors (1).

557180260421 is an equidigital number, since it uses as much as digits as its factorization.

557180260421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 557180260421 in words is "five hundred fifty-seven billion, one hundred eighty million, two hundred sixty thousand, four hundred twenty-one".