1552133420 has 48 divisors (see below), whose sum is σ = 3372515328. Its totient is φ = 599417280.

The previous prime is 1552133419. The next prime is 1552133431. The reversal of 1552133420 is 243312551.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1552133420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284357 + ... + 289763.

It is an arithmetic number, because the mean of its divisors is an integer number (70260736).

Almost surely, 2^1552133420 is an apocalyptic number.

1552133420 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 1552133420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1686257664).

1552133420 is an abundant number, since it is smaller than the sum of its proper divisors (1820381908).

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

1552133420 is a wasteful number, since it uses less digits than its factorization.

1552133420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5910 (or 5908 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1552133420 is about 39397.1245143602. The cubic root of 1552133420 is about 1157.8252505706.

Adding to 1552133420 its reverse (243312551), we get a palindrome (1795445971).

The spelling of 1552133420 in words is "one billion, five hundred fifty-two million, one hundred thirty-three thousand, four hundred twenty".