2551669121 has 8 divisors (see below), whose sum is σ = 2573346624. Its totient is φ = 2530054800.

The previous prime is 2551669103. The next prime is 2551669187. The reversal of 2551669121 is 1219661552.

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 2551669121 - 2¹⁴ = 2551652737 is a prime.

It is a super-2 number, since 2×2551669121² = 13022030606129825282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2551668121) 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, 67151 + ... + 98043.

It is an arithmetic number, because the mean of its divisors is an integer number (321668328).

Almost surely, 2^2551669121 is an apocalyptic number.

It is an amenable number.

2551669121 is a deficient number, since it is larger than the sum of its proper divisors (21677503).

2551669121 is a wasteful number, since it uses less digits than its factorization.

2551669121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31591.

The product of its digits is 32400, while the sum is 38.

The square root of 2551669121 is about 50514.0487488382. The cubic root of 2551669121 is about 1366.4952277977.

The spelling of 2551669121 in words is "two billion, five hundred fifty-one million, six hundred sixty-nine thousand, one hundred twenty-one".