6551050621 has 4 divisors (see below), whose sum is σ = 6551685792. Its totient is φ = 6550415452.

The previous prime is 6551050619. The next prime is 6551050631. The reversal of 6551050621 is 1260501556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6551050621 - 2¹ = 6551050619 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 (6551050631) 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, 301855 + ... + 322828.

It is an arithmetic number, because the mean of its divisors is an integer number (1637921448).

Almost surely, 2^6551050621 is an apocalyptic number.

It is an amenable number.

6551050621 is a deficient number, since it is larger than the sum of its proper divisors (635171).

6551050621 is a wasteful number, since it uses less digits than its factorization.

6551050621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635170.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 6551050621 is about 80938.5607791490. The cubic root of 6551050621 is about 1871.1286637769.

The spelling of 6551050621 in words is "six billion, five hundred fifty-one million, fifty thousand, six hundred twenty-one".