2551469 has 2 divisors, whose sum is σ = 2551470. Its totient is φ = 2551468.

The previous prime is 2551457. The next prime is 2551481. The reversal of 2551469 is 9641552.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2551457) and next prime (2551481).

It can be written as a sum of positive squares in only one way, i.e., 1932100 + 619369 = 1390^2 + 787^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2551469 is a prime.

It is a super-2 number, since 2×2551469² = 13019988115922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2551429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275734 + 1275735.

It is an arithmetic number, because the mean of its divisors is an integer number (1275735).

2^2551469 is an apocalyptic number.

It is an amenable number.

2551469 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551469 is an equidigital number, since it uses as much as digits as its factorization.

2551469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 2551469 is about 1597.3318377845. The cubic root of 2551469 is about 136.6459503268.

The spelling of 2551469 in words is "two million, five hundred fifty-one thousand, four hundred sixty-nine".