1051540223 has 2 divisors, whose sum is σ = 1051540224. Its totient is φ = 1051540222.

The previous prime is 1051540213. The next prime is 1051540241. The reversal of 1051540223 is 3220451501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1051540223 - 2¹² = 1051536127 is a prime.

It is a super-2 number, since 2×1051540223² = 2211473681173779458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1051540213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525770111 + 525770112.

It is an arithmetic number, because the mean of its divisors is an integer number (525770112).

Almost surely, 2^1051540223 is an apocalyptic number.

1051540223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051540223 is an equidigital number, since it uses as much as digits as its factorization.

1051540223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1051540223 is about 32427.4609397652. The cubic root of 1051540223 is about 1016.8930908510.

Adding to 1051540223 its reverse (3220451501), we get a palindrome (4271991724).

The spelling of 1051540223 in words is "one billion, fifty-one million, five hundred forty thousand, two hundred twenty-three".