1052145252 has 18 divisors (see below), whose sum is σ = 2659589478. Its totient is φ = 350715072.

The previous prime is 1052145229. The next prime is 1052145253. The reversal of 1052145252 is 2525412501.

It can be written as a sum of positive squares in only one way, i.e., 659154276 + 392990976 = 25674^2 + 19824^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1052145252² = 2214019262612287008, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1052145253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14613093 + ... + 14613164.

It is an arithmetic number, because the mean of its divisors is an integer number (147754971).

Almost surely, 2^1052145252 is an apocalyptic number.

1052145252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1052145252 is an abundant number, since it is smaller than the sum of its proper divisors (1607444226).

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

1052145252 is a wasteful number, since it uses less digits than its factorization.

1052145252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29226267 (or 29226262 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1052145252 is about 32436.7885586721. The cubic root of 1052145252 is about 1017.0880847703.

Adding to 1052145252 its reverse (2525412501), we get a palindrome (3577557753).

The spelling of 1052145252 in words is "one billion, fifty-two million, one hundred forty-five thousand, two hundred fifty-two".