1552043400 has 144 divisors (see below), whose sum is σ = 4920079440. Its totient is φ = 404726400.

The previous prime is 1552043357. The next prime is 1552043413. The reversal of 1552043400 is 43402551.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1324815 + ... + 1325985.

Almost surely, 2^1552043400 is an apocalyptic number.

1552043400 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 1552043400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2460039720).

1552043400 is an abundant number, since it is smaller than the sum of its proper divisors (3368036040).

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

1552043400 is a wasteful number, since it uses less digits than its factorization.

1552043400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1228 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1552043400 is about 39395.9820286282. The cubic root of 1552043400 is about 1157.8028664459.

Adding to 1552043400 its reverse (43402551), we get a palindrome (1595445951).

The spelling of 1552043400 in words is "one billion, five hundred fifty-two million, forty-three thousand, four hundred".