1015555002 has 128 divisors (see below), whose sum is σ = 2639001600. Its totient is φ = 252806400.

The previous prime is 1015555001. The next prime is 1015555003. The reversal of 1015555002 is 2005555101.

It is an interprime number because it is at equal distance from previous prime (1015555001) and next prime (1015555003).

It is not an unprimeable number, because it can be changed into a prime (1015555001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3067977 + ... + 3068307.

It is an arithmetic number, because the mean of its divisors is an integer number (20617200).

Almost surely, 2^1015555002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1015555002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1319500800).

1015555002 is an abundant number, since it is smaller than the sum of its proper divisors (1623446598).

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

1015555002 is a wasteful number, since it uses less digits than its factorization.

1015555002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612.

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 1015555002 is about 31867.7737220534. The cubic root of 1015555002 is about 1005.1583463773.

Subtracting 1015555002 from its reverse (2005555101), we obtain a palindrome (990000099).

The spelling of 1015555002 in words is "one billion, fifteen million, five hundred fifty-five thousand, two".