1201287552 has 64 divisors (see below), whose sum is σ = 3229450560. Its totient is φ = 395594240.

The previous prime is 1201287533. The next prime is 1201287569. The reversal of 1201287552 is 2557821021.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13027 + ... + 50717.

It is an arithmetic number, because the mean of its divisors is an integer number (50460165).

Almost surely, 2^1201287552 is an apocalyptic number.

1201287552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201287552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614725280).

1201287552 is an abundant number, since it is smaller than the sum of its proper divisors (2028163008).

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

1201287552 is an equidigital number, since it uses as much as digits as its factorization.

1201287552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37791 (or 37779 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 1201287552 is about 34659.5953813659. The cubic root of 1201287552 is about 1063.0384967121.

The spelling of 1201287552 in words is "one billion, two hundred one million, two hundred eighty-seven thousand, five hundred fifty-two".