55513105 has 16 divisors (see below), whose sum is σ = 69342480. Its totient is φ = 42611968.

The previous prime is 55513103. The next prime is 55513121. The reversal of 55513105 is 50131555.

It can be written as a sum of positive squares in 8 ways, for example, as 14258176 + 41254929 = 3776^2 + 6423^2 .

It is a cyclic number.

It is not a de Polignac number, because 55513105 - 2¹ = 55513103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55513105.

It is not an unprimeable number, because it can be changed into a prime (55513103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23979 + ... + 26191.

It is an arithmetic number, because the mean of its divisors is an integer number (4333905).

Almost surely, 2^55513105 is an apocalyptic number.

It is an amenable number.

55513105 is a deficient number, since it is larger than the sum of its proper divisors (13829375).

55513105 is a wasteful number, since it uses less digits than its factorization.

55513105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 55513105 is about 7450.7117109710. The cubic root of 55513105 is about 381.4742019088.

The spelling of 55513105 in words is "fifty-five million, five hundred thirteen thousand, one hundred five".