1550252000 has 144 divisors (see below), whose sum is σ = 4188025296. Its totient is φ = 563552000.

The previous prime is 1550251949. The next prime is 1550252027. The reversal of 1550252000 is 2520551.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 482399 + ... + 485601.

It is an arithmetic number, because the mean of its divisors is an integer number (29083509).

Almost surely, 2^1550252000 is an apocalyptic number.

1550252000 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 1550252000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2094012648).

1550252000 is an abundant number, since it is smaller than the sum of its proper divisors (2637773296).

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

1550252000 is a wasteful number, since it uses less digits than its factorization.

1550252000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250 (or 3221 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 1550252000 is about 39373.2396431891. The cubic root of 1550252000 is about 1157.3572417613.

Adding to 1550252000 its reverse (2520551), we get a palindrome (1552772551).

The spelling of 1550252000 in words is "one billion, five hundred fifty million, two hundred fifty-two thousand".