1051275261 has 8 divisors (see below), whose sum is σ = 1418588640. Its totient is φ = 692406032.

The previous prime is 1051275229. The next prime is 1051275271. The reversal of 1051275261 is 1625721501.

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 1051275261 - 2⁵ = 1051275229 is a prime.

It is a super-2 number, since 2×1051275261² = 2210359348781236242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051275271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2110746 + ... + 2111243.

It is an arithmetic number, because the mean of its divisors is an integer number (177323580).

Almost surely, 2^1051275261 is an apocalyptic number.

It is an amenable number.

1051275261 is a deficient number, since it is larger than the sum of its proper divisors (367313379).

1051275261 is an equidigital number, since it uses as much as digits as its factorization.

1051275261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222075.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 1051275261 is about 32423.3752252908. The cubic root of 1051275261 is about 1016.8076730816.

Adding to 1051275261 its reverse (1625721501), we get a palindrome (2676996762).

The spelling of 1051275261 in words is "one billion, fifty-one million, two hundred seventy-five thousand, two hundred sixty-one".