1161455 has 8 divisors (see below), whose sum is σ = 1404000. Its totient is φ = 922336.

The previous prime is 1161449. The next prime is 1161463. The reversal of 1161455 is 5541611.

1161455 = T₃₈₆ + T₃₈₇ + ... + T₄₀₀.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1161455 - 2⁴ = 1161439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1161455.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 35 + ... + 1524.

It is an arithmetic number, because the mean of its divisors is an integer number (175500).

2^1161455 is an apocalyptic number.

1161455 is a deficient number, since it is larger than the sum of its proper divisors (242545).

1161455 is a wasteful number, since it uses less digits than its factorization.

1161455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713.

The product of its digits is 600, while the sum is 23.

The square root of 1161455 is about 1077.7082165410. The cubic root of 1161455 is about 105.1156699591.

The spelling of 1161455 in words is "one million, one hundred sixty-one thousand, four hundred fifty-five".