2251507 has 2 divisors, whose sum is σ = 2251508. Its totient is φ = 2251506.

The previous prime is 2251489. The next prime is 2251511. The reversal of 2251507 is 7051522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2251507 is a prime.

2251507 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2251517) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125753 + 1125754.

It is an arithmetic number, because the mean of its divisors is an integer number (1125754).

2^2251507 is an apocalyptic number.

2251507 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251507 is an equidigital number, since it uses as much as digits as its factorization.

2251507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 2251507 is about 1500.5022492486. The cubic root of 2251507 is about 131.0663184205.

It can be divided in two parts, 22 and 51507, that added together give a square (51529 = 227²).

The spelling of 2251507 in words is "two million, two hundred fifty-one thousand, five hundred seven".