1207561 has 8 divisors (see below), whose sum is σ = 1288224. Its totient is φ = 1128000.

The previous prime is 1207537. The next prime is 1207597. The reversal of 1207561 is 1657021.

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 1207561 - 2⁵ = 1207529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1207501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4126 + ... + 4408.

It is an arithmetic number, because the mean of its divisors is an integer number (161028).

2^1207561 is an apocalyptic number.

It is an amenable number.

1207561 is a deficient number, since it is larger than the sum of its proper divisors (80663).

1207561 is a wasteful number, since it uses less digits than its factorization.

1207561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1207561 is about 1098.8908044023. The cubic root of 1207561 is about 106.4885776137.

The spelling of 1207561 in words is "one million, two hundred seven thousand, five hundred sixty-one".