1051661052 has 72 divisors (see below), whose sum is σ = 2868385520. Its totient is φ = 322963200.

The previous prime is 1051661047. The next prime is 1051661063. The reversal of 1051661052 is 2501661501.

It is a happy number.

It is a super-2 number, since 2×1051661052² = 2211981936587493408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 279399 + ... + 283137.

Almost surely, 2^1051661052 is an apocalyptic number.

1051661052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1051661052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1434192760).

1051661052 is an abundant number, since it is smaller than the sum of its proper divisors (1816724468).

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

1051661052 is a wasteful number, since it uses less digits than its factorization.

1051661052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4363 (or 4358 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1051661052 is about 32429.3239522504. The cubic root of 1051661052 is about 1016.9320386302.

The spelling of 1051661052 in words is "one billion, fifty-one million, six hundred sixty-one thousand, fifty-two".