555106642 has 4 divisors (see below), whose sum is σ = 832659966. Its totient is φ = 277553320.

The previous prime is 555106639. The next prime is 555106663. The reversal of 555106642 is 246601555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246601555 = 5 ⋅49320311.

It can be written as a sum of positive squares in only one way, i.e., 554084521 + 1022121 = 23539^2 + 1011^2 .

It is a junction number, because it is equal to n+sod(n) for n = 555106598 and 555106607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138776659 + ... + 138776662.

Almost surely, 2^555106642 is an apocalyptic number.

555106642 is a deficient number, since it is larger than the sum of its proper divisors (277553324).

555106642 is a wasteful number, since it uses less digits than its factorization.

555106642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277553323.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 555106642 is about 23560.7012204646. The cubic root of 555106642 is about 821.8492085706.

The spelling of 555106642 in words is "five hundred fifty-five million, one hundred six thousand, six hundred forty-two".