55359945 has 24 divisors (see below), whose sum is σ = 96700032. Its totient is φ = 29296800.

The previous prime is 55359917. The next prime is 55359949. The reversal of 55359945 is 54995355.

55359945 is a `hidden beast` number, since 5 + 53 + 599 + 4 + 5 = 666.

It is not a de Polignac number, because 55359945 - 2⁹ = 55359433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55359945.

It is not an unprimeable number, because it can be changed into a prime (55359949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1200 + ... + 10590.

It is an arithmetic number, because the mean of its divisors is an integer number (4029168).

Almost surely, 2^55359945 is an apocalyptic number.

It is an amenable number.

55359945 is a deficient number, since it is larger than the sum of its proper divisors (41340087).

55359945 is a wasteful number, since it uses less digits than its factorization.

55359945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533 (or 9530 counting only the distinct ones).

The product of its digits is 607500, while the sum is 45.

The square root of 55359945 is about 7440.4263990715. The cubic root of 55359945 is about 381.1230511669.

It can be divided in two parts, 55 and 359945, that added together give a square (360000 = 600²).

The spelling of 55359945 in words is "fifty-five million, three hundred fifty-nine thousand, nine hundred forty-five".