1552320 has 252 divisors, whose sum is σ = 6775704. Its totient is φ = 322560.

The previous prime is 1552307. The next prime is 1552333. The reversal of 1552320 is 232551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1552307) and next prime (1552333).

It is a tau number, because it is divible by the number of its divisors (252).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1552293 and 1552302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 141115 + ... + 141125.

2^1552320 is an apocalyptic number.

1552320 is a gapful number since it is divisible by the number (10) 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 1552320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3387852).

1552320 is an abundant number, since it is smaller than the sum of its proper divisors (5223384).

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

1552320 is a wasteful number, since it uses less digits than its factorization.

1552320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1552320 is about 1245.9213458321. The cubic root of 1552320 is about 115.7871642283.

Adding to 1552320 its reverse (232551), we get a palindrome (1784871).

The spelling of 1552320 in words is "one million, five hundred fifty-two thousand, three hundred twenty".