1051223457 has 4 divisors (see below), whose sum is σ = 1401631280. Its totient is φ = 700815636.

The previous prime is 1051223449. The next prime is 1051223471. The reversal of 1051223457 is 7543221501.

1051223457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7543221501 = 3 ⋅2514407167.

It is not a de Polignac number, because 1051223457 - 2³ = 1051223449 is a prime.

It is a super-2 number, since 2×1051223457² = 2210141513094061698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051223447) 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, 175203907 + ... + 175203912.

It is an arithmetic number, because the mean of its divisors is an integer number (350407820).

Almost surely, 2^1051223457 is an apocalyptic number.

It is an amenable number.

1051223457 is a deficient number, since it is larger than the sum of its proper divisors (350407823).

1051223457 is an equidigital number, since it uses as much as digits as its factorization.

1051223457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350407822.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 1051223457 is about 32422.5763473540. The cubic root of 1051223457 is about 1016.7909709637.

Adding to 1051223457 its reverse (7543221501), we get a palindrome (8594444958).

The spelling of 1051223457 in words is "one billion, fifty-one million, two hundred twenty-three thousand, four hundred fifty-seven".