1338551 has 2 divisors, whose sum is σ = 1338552. Its totient is φ = 1338550.

The previous prime is 1338539. The next prime is 1338559. The reversal of 1338551 is 1558331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1338551 - 2¹⁰ = 1337527 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1338551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1338559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669275 + 669276.

It is an arithmetic number, because the mean of its divisors is an integer number (669276).

2^1338551 is an apocalyptic number.

1338551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338551 is an equidigital number, since it uses as much as digits as its factorization.

1338551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 26.

The square root of 1338551 is about 1156.9576483173. The cubic root of 1338551 is about 110.2076243925.

The spelling of 1338551 in words is "one million, three hundred thirty-eight thousand, five hundred fifty-one".