1076551261 has 4 divisors (see below), whose sum is σ = 1076642172. Its totient is φ = 1076460352.

The previous prime is 1076551237. The next prime is 1076551277. The reversal of 1076551261 is 1621556701.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 606095161 + 470456100 = 24619^2 + 21690^2 .

It is a cyclic number.

It is not a de Polignac number, because 1076551261 - 2¹¹ = 1076549213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1076591261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24460 + ... + 52453.

It is an arithmetic number, because the mean of its divisors is an integer number (269160543).

Almost surely, 2^1076551261 is an apocalyptic number.

It is an amenable number.

1076551261 is a deficient number, since it is larger than the sum of its proper divisors (90911).

1076551261 is an equidigital number, since it uses as much as digits as its factorization.

1076551261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90910.

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

The square root of 1076551261 is about 32810.8406018499. The cubic root of 1076551261 is about 1024.8923181743.

It can be divided in two parts, 10765 and 51261, that added together give a palindrome (62026).

The spelling of 1076551261 in words is "one billion, seventy-six million, five hundred fifty-one thousand, two hundred sixty-one".