1278552 has 64 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 371840.

The previous prime is 1278551. The next prime is 1278583. The reversal of 1278552 is 2558721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7573 + ... + 7739.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2^1278552 is an apocalyptic number.

1278552 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 1278552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814400).

1278552 is an abundant number, since it is smaller than the sum of its proper divisors (2350248).

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

1278552 is a wasteful number, since it uses less digits than its factorization.

1278552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 212 counting only the distinct ones).

The product of its digits is 5600, while the sum is 30.

The square root of 1278552 is about 1130.7307371784. The cubic root of 1278552 is about 108.5357467496.

It can be divided in two parts, 1278 and 552, that added together give a triangular number (1830 = T₆₀).

The spelling of 1278552 in words is "one million, two hundred seventy-eight thousand, five hundred fifty-two".