55215240011 has 8 divisors (see below), whose sum is σ = 56578441248. Its totient is φ = 53852824000.

The previous prime is 55215239977. The next prime is 55215240029. The reversal of 55215240011 is 11004251255.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55215240011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55215240611) 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, 52655 + ... + 336456.

It is an arithmetic number, because the mean of its divisors is an integer number (7072305156).

Almost surely, 2^55215240011 is an apocalyptic number.

55215240011 is a deficient number, since it is larger than the sum of its proper divisors (1363201237).

55215240011 is a wasteful number, since it uses less digits than its factorization.

55215240011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392613.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 55215240011 its reverse (11004251255), we get a palindrome (66219491266).

The spelling of 55215240011 in words is "fifty-five billion, two hundred fifteen million, two hundred forty thousand, eleven".