2251551061 has 8 divisors (see below), whose sum is σ = 2259948600. Its totient is φ = 2243167680.

The previous prime is 2251551059. The next prime is 2251551109. The reversal of 2251551061 is 1601551522.

2251551061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 56160036 + 2195391025 = 7494^2 + 46855^2 .

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 2251551061 - 2¹ = 2251551059 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 (2251561061) 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, 394335 + ... + 400003.

It is an arithmetic number, because the mean of its divisors is an integer number (282493575).

Almost surely, 2^2251551061 is an apocalyptic number.

It is an amenable number.

2251551061 is a deficient number, since it is larger than the sum of its proper divisors (8397539).

2251551061 is a wasteful number, since it uses less digits than its factorization.

2251551061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7079.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 2251551061 is about 47450.5117043009. The cubic root of 2251551061 is about 1310.6717338495.

The spelling of 2251551061 in words is "two billion, two hundred fifty-one million, five hundred fifty-one thousand, sixty-one".