1298551 has 2 divisors, whose sum is σ = 1298552. Its totient is φ = 1298550.

The previous prime is 1298537. The next prime is 1298573. The reversal of 1298551 is 1558921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1298551 - 2⁹ = 1298039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649275 + 649276.

It is an arithmetic number, because the mean of its divisors is an integer number (649276).

2^1298551 is an apocalyptic number.

1298551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298551 is an equidigital number, since it uses as much as digits as its factorization.

1298551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 31.

The square root of 1298551 is about 1139.5398194008. The cubic root of 1298551 is about 109.0987237878.

It can be divided in two parts, 1298 and 551, that added together give a square (1849 = 43²).

The spelling of 1298551 in words is "one million, two hundred ninety-eight thousand, five hundred fifty-one".