2551561933 has 8 divisors (see below), whose sum is σ = 2566619136. Its totient is φ = 2536522800.

The previous prime is 2551561931. The next prime is 2551561939. The reversal of 2551561933 is 3391651552.

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 2551561933 - 2¹ = 2551561931 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 (2551561931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365748 + ... + 372658.

It is an arithmetic number, because the mean of its divisors is an integer number (320827392).

Almost surely, 2^2551561933 is an apocalyptic number.

It is an amenable number.

2551561933 is a deficient number, since it is larger than the sum of its proper divisors (15057203).

2551561933 is a wasteful number, since it uses less digits than its factorization.

2551561933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9035.

The product of its digits is 121500, while the sum is 40.

The square root of 2551561933 is about 50512.9877655242. The cubic root of 2551561933 is about 1366.4760934018.

The spelling of 2551561933 in words is "two billion, five hundred fifty-one million, five hundred sixty-one thousand, nine hundred thirty-three".