1213552 has 20 divisors (see below), whose sum is σ = 2385760. Its totient is φ = 597888.

The previous prime is 1213547. The next prime is 1213561. The reversal of 1213552 is 2553121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (119288).

2^1213552 is an apocalyptic number.

It is an amenable number.

1213552 is a deficient number, since it is larger than the sum of its proper divisors (1172208).

1213552 is a wasteful number, since it uses less digits than its factorization.

1213552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120 (or 1114 counting only the distinct ones).

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

The square root of 1213552 is about 1101.6133623009. The cubic root of 1213552 is about 106.6643923126.

Adding to 1213552 its reverse (2553121), we get a palindrome (3766673).

The spelling of 1213552 in words is "one million, two hundred thirteen thousand, five hundred fifty-two".