2550061645 has 8 divisors (see below), whose sum is σ = 3142778904. Its totient is φ = 1984912704.

The previous prime is 2550061603. The next prime is 2550061673. The reversal of 2550061645 is 5461600552.

It can be written as a sum of positive squares in 4 ways, for example, as 210308004 + 2339753641 = 14502^2 + 48371^2 .

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 2550061645 - 2⁷ = 2550061517 is a prime.

It is a super-3 number, since 3×2550061645³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2550061645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6891874 + ... + 6892243.

It is an arithmetic number, because the mean of its divisors is an integer number (392847363).

Almost surely, 2^2550061645 is an apocalyptic number.

It is an amenable number.

2550061645 is a deficient number, since it is larger than the sum of its proper divisors (592717259).

2550061645 is a wasteful number, since it uses less digits than its factorization.

2550061645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13784159.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 2550061645 is about 50498.1350645744. The cubic root of 2550061645 is about 1366.2082170078.

The spelling of 2550061645 in words is "two billion, five hundred fifty million, sixty-one thousand, six hundred forty-five".