2015432550 has 192 divisors, whose sum is σ = 5762399040. Its totient is φ = 517570560.

The previous prime is 2015432539. The next prime is 2015432579. The reversal of 2015432550 is 552345102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7842022 + ... + 7842278.

It is an arithmetic number, because the mean of its divisors is an integer number (30012495).

Almost surely, 2^2015432550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2015432550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2881199520).

2015432550 is an abundant number, since it is smaller than the sum of its proper divisors (3746966490).

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

2015432550 is a wasteful number, since it uses less digits than its factorization.

2015432550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2015432550 is about 44893.5691385748. The cubic root of 2015432550 is about 1263.1533826730.

Adding to 2015432550 its reverse (552345102), we get a palindrome (2567777652).

The spelling of 2015432550 in words is "two billion, fifteen million, four hundred thirty-two thousand, five hundred fifty".