1051522243 has 4 divisors (see below), whose sum is σ = 1056035448. Its totient is φ = 1047009040.

The previous prime is 1051522229. The next prime is 1051522247. The reversal of 1051522243 is 3422251501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3422251501 = 373 ⋅9174937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1051522243 is a prime.

It is a super-2 number, since 2×1051522243² = 2211398055047502098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051522247) 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, 2256253 + ... + 2256718.

It is an arithmetic number, because the mean of its divisors is an integer number (264008862).

Almost surely, 2^1051522243 is an apocalyptic number.

1051522243 is a deficient number, since it is larger than the sum of its proper divisors (4513205).

1051522243 is an equidigital number, since it uses as much as digits as its factorization.

1051522243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513204.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1051522243 is about 32427.1837044169. The cubic root of 1051522243 is about 1016.8872949586.

Adding to 1051522243 its reverse (3422251501), we get a palindrome (4473773744).

The spelling of 1051522243 in words is "one billion, fifty-one million, five hundred twenty-two thousand, two hundred forty-three".