55156361 has 6 divisors (see below), whose sum is σ = 59725710. Its totient is φ = 50913408.

The previous prime is 55156351. The next prime is 55156393. The reversal of 55156361 is 16365155.

55156361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2085136 + 53071225 = 1444^2 + 7285^2 .

It is a de Polignac number, because none of the positive numbers 2^k-55156361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55156351) 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 in 5 ways as a sum of consecutive naturals, for example, 163016 + ... + 163353.

It is an arithmetic number, because the mean of its divisors is an integer number (9954285).

Almost surely, 2^55156361 is an apocalyptic number.

It is an amenable number.

55156361 is a deficient number, since it is larger than the sum of its proper divisors (4569349).

55156361 is a wasteful number, since it uses less digits than its factorization.

55156361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326395 (or 326382 counting only the distinct ones).

The product of its digits is 13500, while the sum is 32.

The square root of 55156361 is about 7426.7328617636. The cubic root of 55156361 is about 380.6552890083.

The spelling of 55156361 in words is "fifty-five million, one hundred fifty-six thousand, three hundred sixty-one".