1015165550 has 48 divisors (see below), whose sum is σ = 2163194880. Its totient is φ = 347211360.

The previous prime is 1015165531. The next prime is 1015165579. The reversal of 1015165550 is 555615101.

It is a happy number.

It is a super-2 number, since 2×1015165550² = 2061122187813605000, which contains 22 as substring.

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, 150347 + ... + 156953.

It is an arithmetic number, because the mean of its divisors is an integer number (45066560).

Almost surely, 2^1015165550 is an apocalyptic number.

1015165550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1015165550 is an abundant number, since it is smaller than the sum of its proper divisors (1148029330).

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

1015165550 is a wasteful number, since it uses less digits than its factorization.

1015165550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7065 (or 7060 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 1015165550 is about 31861.6626998655. The cubic root of 1015165550 is about 1005.0298416095.

The spelling of 1015165550 in words is "one billion, fifteen million, one hundred sixty-five thousand, five hundred fifty".