1356401 has 2 divisors, whose sum is σ = 1356402. Its totient is φ = 1356400.

The previous prime is 1356389. The next prime is 1356409. The reversal of 1356401 is 1046531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1263376 + 93025 = 1124^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 1356401 - 2⁶ = 1356337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1356409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678200 + 678201.

It is an arithmetic number, because the mean of its divisors is an integer number (678201).

2^1356401 is an apocalyptic number.

It is an amenable number.

1356401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356401 is an equidigital number, since it uses as much as digits as its factorization.

1356401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1356401 is about 1164.6462982382. The cubic root of 1356401 is about 110.6953472784.

The spelling of 1356401 in words is "one million, three hundred fifty-six thousand, four hundred one".