1561235 has 8 divisors (see below), whose sum is σ = 2017680. Its totient is φ = 1152864.

The previous prime is 1561213. The next prime is 1561243. The reversal of 1561235 is 5321651.

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 1561235 - 2¹⁰ = 1560211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1561235.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11945 + ... + 12074.

It is an arithmetic number, because the mean of its divisors is an integer number (252210).

2^1561235 is an apocalyptic number.

1561235 is a deficient number, since it is larger than the sum of its proper divisors (456445).

1561235 is a wasteful number, since it uses less digits than its factorization.

1561235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24037.

The product of its digits is 900, while the sum is 23.

The square root of 1561235 is about 1249.4938975441. The cubic root of 1561235 is about 116.0083971329.

Adding to 1561235 its reverse (5321651), we get a palindrome (6882886).

The spelling of 1561235 in words is "one million, five hundred sixty-one thousand, two hundred thirty-five".