55920545 has 16 divisors (see below), whose sum is σ = 69000960. Its totient is φ = 43490304.

The previous prime is 55920539. The next prime is 55920547. The reversal of 55920545 is 54502955.

55920545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55920545 - 2⁸ = 55920289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55920547) 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 15 ways as a sum of consecutive naturals, for example, 25409 + ... + 27521.

It is an arithmetic number, because the mean of its divisors is an integer number (4312560).

Almost surely, 2^55920545 is an apocalyptic number.

It is an amenable number.

55920545 is a deficient number, since it is larger than the sum of its proper divisors (13080415).

55920545 is a wasteful number, since it uses less digits than its factorization.

55920545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264.

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 55920545 is about 7478.0040786295. The cubic root of 55920545 is about 382.4052081165.

It can be divided in two parts, 55920 and 545, that added together give a palindrome (56465).

The spelling of 55920545 in words is "fifty-five million, nine hundred twenty thousand, five hundred forty-five".