55156545 has 20 divisors (see below), whose sum is σ = 98873940. Its totient is φ = 29416608.

The previous prime is 55156531. The next prime is 55156561. The reversal of 55156545 is 54565155.

55156545 is a `hidden beast` number, since 5 + 51 + 565 + 45 = 666.

55156545 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 2 ways, for example, as 27531009 + 27625536 = 5247^2 + 5256^2 .

It is not a de Polignac number, because 55156545 - 2¹⁹ = 54632257 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 67690 + ... + 68499.

It is an arithmetic number, because the mean of its divisors is an integer number (4943697).

Almost surely, 2^55156545 is an apocalyptic number.

It is an amenable number.

55156545 is a deficient number, since it is larger than the sum of its proper divisors (43717395).

55156545 is a wasteful number, since it uses less digits than its factorization.

55156545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136206 (or 136197 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 55156545 is about 7426.7452494346. The cubic root of 55156545 is about 380.6557122928.

The spelling of 55156545 in words is "fifty-five million, one hundred fifty-six thousand, five hundred forty-five".