1002152550 has 192 divisors, whose sum is σ = 3139513344. Its totient is φ = 206131200.

The previous prime is 1002152491. The next prime is 1002152551. The reversal of 1002152550 is 552512001.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002152551) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 409330 + ... + 411770.

It is an arithmetic number, because the mean of its divisors is an integer number (16351632).

Almost surely, 2^1002152550 is an apocalyptic number.

1002152550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002152550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1569756672).

1002152550 is an abundant number, since it is smaller than the sum of its proper divisors (2137360794).

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

1002152550 is a wasteful number, since it uses less digits than its factorization.

1002152550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503 (or 2498 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1002152550 is about 31656.7931098524. The cubic root of 1002152550 is about 1000.7170024513.

Adding to 1002152550 its reverse (552512001), we get a palindrome (1554664551).

The spelling of 1002152550 in words is "one billion, two million, one hundred fifty-two thousand, five hundred fifty".