2551011 has 4 divisors (see below), whose sum is σ = 3401352. Its totient is φ = 1700672.

The previous prime is 2551009. The next prime is 2551013. The reversal of 2551011 is 1101552.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2551009) and next prime (2551013).

It is a cyclic number.

It is not a de Polignac number, because 2551011 - 2¹ = 2551009 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2551013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425166 + ... + 425171.

It is an arithmetic number, because the mean of its divisors is an integer number (850338).

2^2551011 is an apocalyptic number.

2551011 is a deficient number, since it is larger than the sum of its proper divisors (850341).

2551011 is an equidigital number, since it uses as much as digits as its factorization.

2551011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850340.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 2551011 is about 1597.1884672762. The cubic root of 2551011 is about 136.6377736528.

Adding to 2551011 its reverse (1101552), we get a palindrome (3652563).

The spelling of 2551011 in words is "two million, five hundred fifty-one thousand, eleven".