55790440001 has 4 divisors (see below), whose sum is σ = 55831433604. Its totient is φ = 55749446400.

The previous prime is 55790439989. The next prime is 55790440007. The reversal of 55790440001 is 10004409755.

It is a Cunningham number, because it is equal to 236200²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10004409755 = 5 ⋅2000881951.

It can be written as a sum of positive squares in 2 ways, for example, as 9478969600 + 46311470401 = 97360^2 + 215201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55790440001 is a prime.

It is a super-2 number, since 2×55790440001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55790440007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20494760 + ... + 20497481.

It is an arithmetic number, because the mean of its divisors is an integer number (13957858401).

Almost surely, 2^55790440001 is an apocalyptic number.

It is an amenable number.

55790440001 is a deficient number, since it is larger than the sum of its proper divisors (40993603).

55790440001 is a wasteful number, since it uses less digits than its factorization.

55790440001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40993602.

The product of its (nonzero) digits is 25200, while the sum is 35.

Adding to 55790440001 its reverse (10004409755), we get a palindrome (65794849756).

The spelling of 55790440001 in words is "fifty-five billion, seven hundred ninety million, four hundred forty thousand, one".