555681442 has 8 divisors (see below), whose sum is σ = 834178716. Its totient is φ = 277621872.

The previous prime is 555681421. The next prime is 555681461. The reversal of 555681442 is 244186555.

It can be written as a sum of positive squares in 2 ways, for example, as 555592041 + 89401 = 23571^2 + 299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 555681395 and 555681404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106233 + ... + 111340.

Almost surely, 2^555681442 is an apocalyptic number.

555681442 is a deficient number, since it is larger than the sum of its proper divisors (278497274).

555681442 is a wasteful number, since it uses less digits than its factorization.

555681442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218852.

The product of its digits is 192000, while the sum is 40.

The square root of 555681442 is about 23572.8963430462. The cubic root of 555681442 is about 822.1327792880.

The spelling of 555681442 in words is "five hundred fifty-five million, six hundred eighty-one thousand, four hundred forty-two".