1097261 has 8 divisors (see below), whose sum is σ = 1249344. Its totient is φ = 953920.

The previous prime is 1097237. The next prime is 1097267. The reversal of 1097261 is 1627901.

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

It is not a de Polignac number, because 1097261 - 2¹⁸ = 835117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1097261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1916 + ... + 2421.

It is an arithmetic number, because the mean of its divisors is an integer number (156168).

2^1097261 is an apocalyptic number.

1097261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1097261 is a deficient number, since it is larger than the sum of its proper divisors (152083).

1097261 is a wasteful number, since it uses less digits than its factorization.

1097261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1097261 is about 1047.5022673006. The cubic root of 1097261 is about 103.1422610837.

The spelling of 1097261 in words is "one million, ninety-seven thousand, two hundred sixty-one".