2251511 has 2 divisors, whose sum is σ = 2251512. Its totient is φ = 2251510.

The previous prime is 2251507. The next prime is 2251517. The reversal of 2251511 is 1151522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2251511 - 2² = 2251507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2251511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2251517) 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 as a sum of consecutive naturals, namely, 1125755 + 1125756.

It is an arithmetic number, because the mean of its divisors is an integer number (1125756).

2^2251511 is an apocalyptic number.

2251511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251511 is an equidigital number, since it uses as much as digits as its factorization.

2251511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100, while the sum is 17.

The square root of 2251511 is about 1500.5035821350. The cubic root of 2251511 is about 131.0663960374.

The spelling of 2251511 in words is "two million, two hundred fifty-one thousand, five hundred eleven".