1055278247 has 8 divisors (see below), whose sum is σ = 1123206912. Its totient is φ = 988000000.

The previous prime is 1055278241. The next prime is 1055278253. The reversal of 1055278247 is 7428725501.

It is an interprime number because it is at equal distance from previous prime (1055278241) and next prime (1055278253).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1055278247 - 2¹⁴ = 1055261863 is a prime.

It is a super-2 number, since 2×1055278247² = 2227224357182786018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055278241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159254 + ... + 165747.

It is an arithmetic number, because the mean of its divisors is an integer number (140400864).

Almost surely, 2^1055278247 is an apocalyptic number.

1055278247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1055278247 is a deficient number, since it is larger than the sum of its proper divisors (67928665).

1055278247 is a wasteful number, since it uses less digits than its factorization.

1055278247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325209.

The product of its (nonzero) digits is 156800, while the sum is 41.

The square root of 1055278247 is about 32485.0465137423. The cubic root of 1055278247 is about 1018.0966192327.

The spelling of 1055278247 in words is "one billion, fifty-five million, two hundred seventy-eight thousand, two hundred forty-seven".