1158401 has 2 divisors, whose sum is σ = 1158402. Its totient is φ = 1158400.

The previous prime is 1158389. The next prime is 1158407. The reversal of 1158401 is 1048511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1157776 + 625 = 1076^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158401 - 2¹⁴ = 1142017 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (1158407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579200 + 579201.

It is an arithmetic number, because the mean of its divisors is an integer number (579201).

2^1158401 is an apocalyptic number.

It is an amenable number.

1158401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158401 is an equidigital number, since it uses as much as digits as its factorization.

1158401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 1158401 is about 1076.2903883246. The cubic root of 1158401 is about 105.0234565887.

It can be divided in two parts, 11 and 58401, that multiplied together give a triangular number (642411 = T₁₁₃₃).

The spelling of 1158401 in words is "one million, one hundred fifty-eight thousand, four hundred one".