1051661051 has 8 divisors (see below), whose sum is σ = 1202129664. Its totient is φ = 901250280.

The previous prime is 1051661047. The next prime is 1051661063. The reversal of 1051661051 is 1501661501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1051661051 - 2² = 1051661047 is a prime.

It is a super-2 number, since 2×1051661051² = 2211981932380849202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1051661051.

It is not an unprimeable number, because it can be changed into a prime (1051661251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36476 + ... + 58598.

It is an arithmetic number, because the mean of its divisors is an integer number (150266208).

Almost surely, 2^1051661051 is an apocalyptic number.

1051661051 is a deficient number, since it is larger than the sum of its proper divisors (150468613).

1051661051 is an equidigital number, since it uses as much as digits as its factorization.

1051661051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28921.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 1051661051 is about 32429.3239368322. The cubic root of 1051661051 is about 1016.9320383079.

The spelling of 1051661051 in words is "one billion, fifty-one million, six hundred sixty-one thousand, fifty-one".