2550535661 has 8 divisors (see below), whose sum is σ = 2702796000. Its totient is φ = 2400077520.

The previous prime is 2550535657. The next prime is 2550535693. The reversal of 2550535661 is 1665350552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2550535661 - 2² = 2550535657 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 (2550535621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447635 + ... + 453296.

It is an arithmetic number, because the mean of its divisors is an integer number (337849500).

Almost surely, 2^2550535661 is an apocalyptic number.

It is an amenable number.

2550535661 is a deficient number, since it is larger than the sum of its proper divisors (152260339).

2550535661 is a wasteful number, since it uses less digits than its factorization.

2550535661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901099.

The product of its (nonzero) digits is 135000, while the sum is 38.

The square root of 2550535661 is about 50502.8282475348. The cubic root of 2550535661 is about 1366.2928639068.

The spelling of 2550535661 in words is "two billion, five hundred fifty million, five hundred thirty-five thousand, six hundred sixty-one".