2651261285 has 8 divisors (see below), whose sum is σ = 3183659160. Its totient is φ = 2119578624.

The previous prime is 2651261237. The next prime is 2651261297. The reversal of 2651261285 is 5821621562.

It can be written as a sum of positive squares in 4 ways, for example, as 163047361 + 2488213924 = 12769^2 + 49882^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2651261285 is a prime.

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, 170612 + ... + 185501.

It is an arithmetic number, because the mean of its divisors is an integer number (397957395).

Almost surely, 2^2651261285 is an apocalyptic number.

It is an amenable number.

2651261285 is a deficient number, since it is larger than the sum of its proper divisors (532397875).

2651261285 is a wasteful number, since it uses less digits than its factorization.

2651261285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357607.

The product of its digits is 57600, while the sum is 38.

The square root of 2651261285 is about 51490.3999304725. The cubic root of 2651261285 is about 1384.0470161016.

The spelling of 2651261285 in words is "two billion, six hundred fifty-one million, two hundred sixty-one thousand, two hundred eighty-five".