1295551 has 2 divisors, whose sum is σ = 1295552. Its totient is φ = 1295550.

The previous prime is 1295549. The next prime is 1295561. The reversal of 1295551 is 1555921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1295551 - 2¹ = 1295549 is a prime.

Together with 1295549, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1295501) 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, 647775 + 647776.

It is an arithmetic number, because the mean of its divisors is an integer number (647776).

2^1295551 is an apocalyptic number.

1295551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295551 is an equidigital number, since it uses as much as digits as its factorization.

1295551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2250, while the sum is 28.

The square root of 1295551 is about 1138.2227374288. Note that the first 3 decimals coincide. The cubic root of 1295551 is about 109.0146432646.

The spelling of 1295551 in words is "one million, two hundred ninety-five thousand, five hundred fifty-one".