1107561 has 16 divisors (see below), whose sum is σ = 1817984. Its totient is φ = 584064.

The previous prime is 1107553. The next prime is 1107569. The reversal of 1107561 is 1657011.

It is an interprime number because it is at equal distance from previous prime (1107553) and next prime (1107569).

It is not a de Polignac number, because 1107561 - 2³ = 1107553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1107569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1756 + ... + 2301.

It is an arithmetic number, because the mean of its divisors is an integer number (113624).

2^1107561 is an apocalyptic number.

It is an amenable number.

1107561 is a deficient number, since it is larger than the sum of its proper divisors (710423).

1107561 is a wasteful number, since it uses less digits than its factorization.

1107561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 1107561 is about 1052.4072405680. The cubic root of 1107561 is about 103.4639889657.

The spelling of 1107561 in words is "one million, one hundred seven thousand, five hundred sixty-one".