1005516551 has 16 divisors (see below), whose sum is σ = 1114365504. Its totient is φ = 901269504.

The previous prime is 1005516541. The next prime is 1005516559. The reversal of 1005516551 is 1556155001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1005516551 - 2⁶ = 1005516487 is a prime.

It is a super-2 number, since 2×1005516551² = 2022127068669871202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005516559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275726 + ... + 279348.

It is an arithmetic number, because the mean of its divisors is an integer number (69647844).

Almost surely, 2^1005516551 is an apocalyptic number.

1005516551 is a deficient number, since it is larger than the sum of its proper divisors (108848953).

1005516551 is a wasteful number, since it uses less digits than its factorization.

1005516551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250.

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 1005516551 is about 31709.8809679254. The cubic root of 1005516551 is about 1001.8354792879.

The spelling of 1005516551 in words is "one billion, five million, five hundred sixteen thousand, five hundred fifty-one".