1561052244 has 36 divisors (see below), whose sum is σ = 3763771872. Its totient is φ = 503561520.

The previous prime is 1561052243. The next prime is 1561052287. The reversal of 1561052244 is 4422501651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561052243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56152 + ... + 79215.

Almost surely, 2^1561052244 is an apocalyptic number.

It is an amenable number.

1561052244 is an abundant number, since it is smaller than the sum of its proper divisors (2202719628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1561052244 is a wasteful number, since it uses less digits than its factorization.

1561052244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135436 (or 135403 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 1561052244 is about 39510.1536823131. The cubic root of 1561052244 is about 1160.0387036234.

Adding to 1561052244 its reverse (4422501651), we get a palindrome (5983553895).

The spelling of 1561052244 in words is "one billion, five hundred sixty-one million, fifty-two thousand, two hundred forty-four".