1561150200 has 96 divisors (see below), whose sum is σ = 5094316800. Its totient is φ = 394392960.

The previous prime is 1561150169. The next prime is 1561150271. The reversal of 1561150200 is 20511651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57072 + ... + 79871.

It is an arithmetic number, because the mean of its divisors is an integer number (53065800).

Almost surely, 2^1561150200 is an apocalyptic number.

1561150200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1561150200 is an abundant number, since it is smaller than the sum of its proper divisors (3533166600).

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

1561150200 is a wasteful number, since it uses less digits than its factorization.

1561150200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136981 (or 136972 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1561150200 is about 39511.3932935805. The cubic root of 1561150200 is about 1160.0629672518.

Adding to 1561150200 its reverse (20511651), we get a palindrome (1581661851).

The spelling of 1561150200 in words is "one billion, five hundred sixty-one million, one hundred fifty thousand, two hundred".