10051661 has 8 divisors (see below), whose sum is σ = 10444800. Its totient is φ = 9661680.

The previous prime is 10051649. The next prime is 10051663. The reversal of 10051661 is 16615001.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10051661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10051663) 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, 7220 + ... + 8498.

It is an arithmetic number, because the mean of its divisors is an integer number (1305600).

Almost surely, 2^10051661 is an apocalyptic number.

It is an amenable number.

10051661 is a deficient number, since it is larger than the sum of its proper divisors (393139).

10051661 is a wasteful number, since it uses less digits than its factorization.

10051661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 10051661 is about 3170.4354590498. The cubic root of 10051661 is about 215.8138327898.

Adding to 10051661 its reverse (16615001), we get a palindrome (26666662).

The spelling of 10051661 in words is "ten million, fifty-one thousand, six hundred sixty-one".