1055515065 has 24 divisors (see below), whose sum is σ = 1856313984. Its totient is φ = 511764000.

The previous prime is 1055515061. The next prime is 1055515079. The reversal of 1055515065 is 5605155501.

It is not a de Polignac number, because 1055515065 - 2² = 1055515061 is a prime.

It is a super-2 number, since 2×1055515065² = 2228224104883908450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1055515061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288961 + ... + 292590.

It is an arithmetic number, because the mean of its divisors is an integer number (77346416).

Almost surely, 2^1055515065 is an apocalyptic number.

1055515065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1055515065 is a deficient number, since it is larger than the sum of its proper divisors (800798919).

1055515065 is a wasteful number, since it uses less digits than its factorization.

1055515065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581581 (or 581570 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 33.

The square root of 1055515065 is about 32488.6913402187. The cubic root of 1055515065 is about 1018.1727715248.

The spelling of 1055515065 in words is "one billion, fifty-five million, five hundred fifteen thousand, sixty-five".