1061275615 has 4 divisors (see below), whose sum is σ = 1273530744. Its totient is φ = 849020488.

The previous prime is 1061275603. The next prime is 1061275661. The reversal of 1061275615 is 5165721601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1061275615 - 2⁷ = 1061275487 is a prime.

It is a super-2 number, since 2×1061275615² = 2252611861987256450, 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 3 ways as a sum of consecutive naturals, for example, 106127557 + ... + 106127566.

It is an arithmetic number, because the mean of its divisors is an integer number (318382686).

Almost surely, 2^1061275615 is an apocalyptic number.

1061275615 is a deficient number, since it is larger than the sum of its proper divisors (212255129).

1061275615 is an equidigital number, since it uses as much as digits as its factorization.

1061275615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212255128.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1061275615 is about 32577.2254036466. The cubic root of 1061275615 is about 1020.0216626823.

It can be divided in two parts, 1061 and 275615, that added together give a square (276676 = 526²).

The spelling of 1061275615 in words is "one billion, sixty-one million, two hundred seventy-five thousand, six hundred fifteen".