55520113 has 16 divisors (see below), whose sum is σ = 65505024. Its totient is φ = 46485760.

The previous prime is 55520107. The next prime is 55520149. The reversal of 55520113 is 31102555.

It is a cyclic number.

It is not a de Polignac number, because 55520113 - 2¹⁷ = 55389041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55520513) 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, 5631 + ... + 11947.

It is an arithmetic number, because the mean of its divisors is an integer number (4094064).

Almost surely, 2^55520113 is an apocalyptic number.

It is an amenable number.

55520113 is a deficient number, since it is larger than the sum of its proper divisors (9984911).

55520113 is a wasteful number, since it uses less digits than its factorization.

55520113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6392.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 55520113 is about 7451.1819867723. The cubic root of 55520113 is about 381.4902537265.

Adding to 55520113 its reverse (31102555), we get a palindrome (86622668).

The spelling of 55520113 in words is "fifty-five million, five hundred twenty thousand, one hundred thirteen".