1040061556 has 6 divisors (see below), whose sum is σ = 1820107730. Its totient is φ = 520030776.

The previous prime is 1040061553. The next prime is 1040061557. The reversal of 1040061556 is 6551600401.

It can be written as a sum of positive squares in only one way, i.e., 952339600 + 87721956 = 30860^2 + 9366^2 .

It is a super-2 number, since 2×1040061556² = 2163456080538282272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040061551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130007691 + ... + 130007698.

Almost surely, 2^1040061556 is an apocalyptic number.

It is an amenable number.

1040061556 is a deficient number, since it is larger than the sum of its proper divisors (780046174).

1040061556 is a wasteful number, since it uses less digits than its factorization.

1040061556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260015393 (or 260015391 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1040061556 is about 32249.9853643378. The cubic root of 1040061556 is about 1013.1793925413.

Adding to 1040061556 its reverse (6551600401), we get a palindrome (7591661957).

The spelling of 1040061556 in words is "one billion, forty million, sixty-one thousand, five hundred fifty-six".