155556713 has 4 divisors (see below), whose sum is σ = 167522628. Its totient is φ = 143590800.

The previous prime is 155556701. The next prime is 155556721. The reversal of 155556713 is 317655551.

155556713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 317655551 = 11863 ⋅26777.

It can be written as a sum of positive squares in 2 ways, for example, as 23697424 + 131859289 = 4868^2 + 11483^2 .

It is a cyclic number.

It is not a de Polignac number, because 155556713 - 2⁴ = 155556697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155556733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5982938 + ... + 5982963.

It is an arithmetic number, because the mean of its divisors is an integer number (41880657).

Almost surely, 2^155556713 is an apocalyptic number.

155556713 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155556713 is a deficient number, since it is larger than the sum of its proper divisors (11965915).

155556713 is a wasteful number, since it uses less digits than its factorization.

155556713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11965914.

The product of its digits is 78750, while the sum is 38.

The square root of 155556713 is about 12472.2376901661. The cubic root of 155556713 is about 537.8108825673.

The spelling of 155556713 in words is "one hundred fifty-five million, five hundred fifty-six thousand, seven hundred thirteen".