1231552 has 28 divisors (see below), whose sum is σ = 2794000. Its totient is φ = 527616.

The previous prime is 1231547. The next prime is 1231553. The reversal of 1231552 is 2551321.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (1231553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927 + ... + 1822.

2^1231552 is an apocalyptic number.

It is an amenable number.

1231552 is an abundant number, since it is smaller than the sum of its proper divisors (1562448).

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

1231552 is an equidigital number, since it uses as much as digits as its factorization.

1231552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768 (or 2758 counting only the distinct ones).

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

The square root of 1231552 is about 1109.7531256996. The cubic root of 1231552 is about 107.1891724417.

Adding to 1231552 its reverse (2551321), we get a palindrome (3782873).

The spelling of 1231552 in words is "one million, two hundred thirty-one thousand, five hundred fifty-two".