1055278065 has 32 divisors (see below), whose sum is σ = 1768513536. Its totient is φ = 536310720.

The previous prime is 1055278061. The next prime is 1055278109. The reversal of 1055278065 is 5608725501.

It is not a de Polignac number, because 1055278065 - 2² = 1055278061 is a prime.

It is a super-2 number, since 2×1055278065² = 2227223588940288450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1055278061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87852 + ... + 99138.

It is an arithmetic number, because the mean of its divisors is an integer number (55266048).

Almost surely, 2^1055278065 is an apocalyptic number.

1055278065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1055278065 is a deficient number, since it is larger than the sum of its proper divisors (713235471).

1055278065 is a wasteful number, since it uses less digits than its factorization.

1055278065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11589.

The product of its (nonzero) digits is 84000, while the sum is 39.

The square root of 1055278065 is about 32485.0437124533. The cubic root of 1055278065 is about 1018.0965607036.

The spelling of 1055278065 in words is "one billion, fifty-five million, two hundred seventy-eight thousand, sixty-five".