1055665615 has 16 divisors (see below), whose sum is σ = 1322889408. Its totient is φ = 807195136.

The previous prime is 1055665519. The next prime is 1055665621. The reversal of 1055665615 is 5165665501.

It is a cyclic number.

It is not a de Polignac number, because 1055665615 - 2⁷ = 1055665487 is a prime.

It is a super-2 number, since 2×1055665615² = 2228859781386656450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196647 + ... + 201943.

It is an arithmetic number, because the mean of its divisors is an integer number (82680588).

Almost surely, 2^1055665615 is an apocalyptic number.

1055665615 is a deficient number, since it is larger than the sum of its proper divisors (267223793).

1055665615 is a wasteful number, since it uses less digits than its factorization.

1055665615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7058.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 1055665615 is about 32491.0082176592. The cubic root of 1055665615 is about 1018.2211771574.

The spelling of 1055665615 in words is "one billion, fifty-five million, six hundred sixty-five thousand, six hundred fifteen".