1052405444 has 6 divisors (see below), whose sum is σ = 1841709534. Its totient is φ = 526202720.

The previous prime is 1052405437. The next prime is 1052405513. The reversal of 1052405444 is 4445042501.

It can be written as a sum of positive squares in only one way, i.e., 994645444 + 57760000 = 31538^2 + 7600^2 .

It is a super-2 number, since 2×1052405444² = 2215114437121674272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131550677 + ... + 131550684.

It is an arithmetic number, because the mean of its divisors is an integer number (306951589).

Almost surely, 2^1052405444 is an apocalyptic number.

It is an amenable number.

1052405444 is a deficient number, since it is larger than the sum of its proper divisors (789304090).

1052405444 is a wasteful number, since it uses less digits than its factorization.

1052405444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263101365 (or 263101363 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 1052405444 is about 32440.7990653745. The cubic root of 1052405444 is about 1017.1719186866.

Adding to 1052405444 its reverse (4445042501), we get a palindrome (5497447945).

The spelling of 1052405444 in words is "one billion, fifty-two million, four hundred five thousand, four hundred forty-four".