55100013 has 8 divisors (see below), whose sum is σ = 73550976. Its totient is φ = 36691200.

The previous prime is 55100011. The next prime is 55100021. The reversal of 55100013 is 31000155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55100013 - 2¹ = 55100011 is a prime.

It is a super-2 number, since 2×55100013² = 6072022865200338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55099965 and 55100001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55100011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7348 + ... + 12813.

It is an arithmetic number, because the mean of its divisors is an integer number (9193872).

Almost surely, 2^55100013 is an apocalyptic number.

It is an amenable number.

55100013 is a deficient number, since it is larger than the sum of its proper divisors (18450963).

55100013 is a wasteful number, since it uses less digits than its factorization.

55100013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21075.

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 55100013 is about 7422.9382996223. The cubic root of 55100013 is about 380.5256184247.

Adding to 55100013 its reverse (31000155), we get a palindrome (86100168).

The spelling of 55100013 in words is "fifty-five million, one hundred thousand, thirteen".