2550650021 has 16 divisors (see below), whose sum is σ = 2784326400. Its totient is φ = 2329100928.

The previous prime is 2550649993. The next prime is 2550650027. The reversal of 2550650021 is 1200560552.

It is a cyclic number.

It is not a de Polignac number, because 2550650021 - 2⁶ = 2550649957 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 (2550650027) 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, 37880 + ... + 80846.

It is an arithmetic number, because the mean of its divisors is an integer number (174020400).

Almost surely, 2^2550650021 is an apocalyptic number.

It is an amenable number.

2550650021 is a deficient number, since it is larger than the sum of its proper divisors (233676379).

2550650021 is a wasteful number, since it uses less digits than its factorization.

2550650021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43108.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2550650021 is about 50503.9604486618. The cubic root of 2550650021 is about 1366.3132840509.

The spelling of 2550650021 in words is "two billion, five hundred fifty million, six hundred fifty thousand, twenty-one".