55319040001 has 4 divisors (see below), whose sum is σ = 55638803412. Its totient is φ = 54999276592.

The previous prime is 55319039953. The next prime is 55319040013. The reversal of 55319040001 is 10004091355.

It is a Cunningham number, because it is equal to 235200²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10004091355 = 5 ⋅2000818271.

It can be written as a sum of positive squares in 2 ways, for example, as 50321256976 + 4997783025 = 224324^2 + 70695^2 .

It is a cyclic number.

It is not a de Polignac number, because 55319040001 - 2¹¹ = 55319037953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55319040401) 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, 159881446 + ... + 159881791.

It is an arithmetic number, because the mean of its divisors is an integer number (13909700853).

Almost surely, 2^55319040001 is an apocalyptic number.

It is an amenable number.

55319040001 is a deficient number, since it is larger than the sum of its proper divisors (319763411).

55319040001 is a wasteful number, since it uses less digits than its factorization.

55319040001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319763410.

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 55319040001 in words is "fifty-five billion, three hundred nineteen million, forty thousand, one".