55976720837 has 16 divisors (see below), whose sum is σ = 58072700400. Its totient is φ = 53892034560.

The previous prime is 55976720803. The next prime is 55976720851. The reversal of 55976720837 is 73802767955.

It is a happy number.

55976720837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 236594²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1781346436 + 54195374401 = 42206^2 + 232799^2 .

It is a cyclic number.

It is not a de Polignac number, because 55976720837 - 2⁸ = 55976720581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55976720887) 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, 23910287 + ... + 23912627.

It is an arithmetic number, because the mean of its divisors is an integer number (3629543775).

Almost surely, 2^55976720837 is an apocalyptic number.

It is an amenable number.

55976720837 is a deficient number, since it is larger than the sum of its proper divisors (2095979563).

55976720837 is a wasteful number, since it uses less digits than its factorization.

55976720837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376.

The product of its (nonzero) digits is 22226400, while the sum is 59.

The spelling of 55976720837 in words is "fifty-five billion, nine hundred seventy-six million, seven hundred twenty thousand, eight hundred thirty-seven".