1051521252 has 12 divisors (see below), whose sum is σ = 2453549616. Its totient is φ = 350507080.

The previous prime is 1051521227. The next prime is 1051521257. The reversal of 1051521252 is 2521251501.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1051521252² = 2211393886815295008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051521257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43813374 + ... + 43813397.

It is an arithmetic number, because the mean of its divisors is an integer number (204462468).

Almost surely, 2^1051521252 is an apocalyptic number.

1051521252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1051521252 is an abundant number, since it is smaller than the sum of its proper divisors (1402028364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1051521252 is a wasteful number, since it uses less digits than its factorization.

1051521252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87626778 (or 87626776 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1051521252 is about 32427.1684240237. The cubic root of 1051521252 is about 1016.8869755057.

Adding to 1051521252 its reverse (2521251501), we get a palindrome (3572772753).

The spelling of 1051521252 in words is "one billion, fifty-one million, five hundred twenty-one thousand, two hundred fifty-two".