155556679 has 2 divisors, whose sum is σ = 155556680. Its totient is φ = 155556678.

The previous prime is 155556673. The next prime is 155556689. The reversal of 155556679 is 976655551.

155556679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155556679 - 2¹⁹ = 155032391 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155556673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77778339 + 77778340.

It is an arithmetic number, because the mean of its divisors is an integer number (77778340).

Almost surely, 2^155556679 is an apocalyptic number.

155556679 is a deficient number, since it is larger than the sum of its proper divisors (1).

155556679 is an equidigital number, since it uses as much as digits as its factorization.

155556679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1417500, while the sum is 49.

The square root of 155556679 is about 12472.2363271388. The cubic root of 155556679 is about 537.8108433842.

The spelling of 155556679 in words is "one hundred fifty-five million, five hundred fifty-six thousand, six hundred seventy-nine".