1552240 has 20 divisors (see below), whose sum is σ = 3609144. Its totient is φ = 620864.

The previous prime is 1552237. The next prime is 1552241. The reversal of 1552240 is 422551.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9622 + ... + 9781.

2^1552240 is an apocalyptic number.

1552240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1552240 is an abundant number, since it is smaller than the sum of its proper divisors (2056904).

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

1552240 is a wasteful number, since it uses less digits than its factorization.

1552240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19416 (or 19410 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1552240 is about 1245.8892406631. The cubic root of 1552240 is about 115.7851751340.

Adding to 1552240 its reverse (422551), we get a palindrome (1974791).

The spelling of 1552240 in words is "one million, five hundred fifty-two thousand, two hundred forty".