6551955937 has 4 divisors (see below), whose sum is σ = 6557639620. Its totient is φ = 6546272256.

The previous prime is 6551955911. The next prime is 6551955979. The reversal of 6551955937 is 7395591556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5929154001 + 622801936 = 77001^2 + 24956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6551955937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6551955637) 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, 2840112 + ... + 2842417.

It is an arithmetic number, because the mean of its divisors is an integer number (1639409905).

Almost surely, 2^6551955937 is an apocalyptic number.

It is an amenable number.

6551955937 is a deficient number, since it is larger than the sum of its proper divisors (5683683).

6551955937 is a wasteful number, since it uses less digits than its factorization.

6551955937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5683682.

The product of its digits is 6378750, while the sum is 55.

The square root of 6551955937 is about 80944.1531983626. The cubic root of 6551955937 is about 1871.2148527355.

The spelling of 6551955937 in words is "six billion, five hundred fifty-one million, nine hundred fifty-five thousand, nine hundred thirty-seven".