1561062245 has 8 divisors (see below), whose sum is σ = 1874313216. Its totient is φ = 1248157456.

The previous prime is 1561062241. The next prime is 1561062253. The reversal of 1561062245 is 5422601651.

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 1561062245 - 2² = 1561062241 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561062241) 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, 76517 + ... + 94746.

It is an arithmetic number, because the mean of its divisors is an integer number (234289152).

Almost surely, 2^1561062245 is an apocalyptic number.

It is an amenable number.

1561062245 is a deficient number, since it is larger than the sum of its proper divisors (313250971).

1561062245 is a wasteful number, since it uses less digits than its factorization.

1561062245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173091.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1561062245 is about 39510.2802445136. The cubic root of 1561062245 is about 1160.0411809102.

Adding to 1561062245 its reverse (5422601651), we get a palindrome (6983663896).

The spelling of 1561062245 in words is "one billion, five hundred sixty-one million, sixty-two thousand, two hundred forty-five".