1561201153 has 8 divisors (see below), whose sum is σ = 1629669888. Its totient is φ = 1492781664.

The previous prime is 1561201151. The next prime is 1561201189. The reversal of 1561201153 is 3511021651.

It is a happy number.

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 1561201153 - 2¹ = 1561201151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1561201151) 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, 62125 + ... + 83557.

It is an arithmetic number, because the mean of its divisors is an integer number (203708736).

Almost surely, 2^1561201153 is an apocalyptic number.

It is an amenable number.

1561201153 is a deficient number, since it is larger than the sum of its proper divisors (68468735).

1561201153 is a wasteful number, since it uses less digits than its factorization.

1561201153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24623.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1561201153 is about 39512.0380770215. The cubic root of 1561201153 is about 1160.0755878707.

The spelling of 1561201153 in words is "one billion, five hundred sixty-one million, two hundred one thousand, one hundred fifty-three".