1051521203 has 2 divisors, whose sum is σ = 1051521204. Its totient is φ = 1051521202.

The previous prime is 1051521173. The next prime is 1051521227. The reversal of 1051521203 is 3021251501.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1051521203 - 2¹⁶ = 1051455667 is a prime.

It is a super-2 number, since 2×1051521203² = 2211393680717134418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1051521283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525760601 + 525760602.

It is an arithmetic number, because the mean of its divisors is an integer number (525760602).

Almost surely, 2^1051521203 is an apocalyptic number.

1051521203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051521203 is an equidigital number, since it uses as much as digits as its factorization.

1051521203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1051521203 is about 32427.1676684844. The cubic root of 1051521203 is about 1016.8869597103.

Adding to 1051521203 its reverse (3021251501), we get a palindrome (4072772704).

The spelling of 1051521203 in words is "one billion, fifty-one million, five hundred twenty-one thousand, two hundred three".