1201553200 has 60 divisors (see below), whose sum is σ = 3056556600. Its totient is φ = 452346880.

The previous prime is 1201553191. The next prime is 1201553233. The reversal of 1201553200 is 23551021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81550 + ... + 95149.

It is an arithmetic number, because the mean of its divisors is an integer number (50942610).

Almost surely, 2^1201553200 is an apocalyptic number.

1201553200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201553200 is an abundant number, since it is smaller than the sum of its proper divisors (1855003400).

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

1201553200 is a wasteful number, since it uses less digits than its factorization.

1201553200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176734 (or 176723 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1201553200 is about 34663.4274127646. The cubic root of 1201553200 is about 1063.1168496529.

The spelling of 1201553200 in words is "one billion, two hundred one million, five hundred fifty-three thousand, two hundred".