10051561 has 8 divisors (see below), whose sum is σ = 11055744. Its totient is φ = 9080400.

The previous prime is 10051543. The next prime is 10051577. The reversal of 10051561 is 16515001.

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

It is not a de Polignac number, because 10051561 - 2¹¹ = 10049513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10051501) 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, 7615 + ... + 8836.

It is an arithmetic number, because the mean of its divisors is an integer number (1381968).

Almost surely, 2^10051561 is an apocalyptic number.

It is an amenable number.

10051561 is a deficient number, since it is larger than the sum of its proper divisors (1004183).

10051561 is a wasteful number, since it uses less digits than its factorization.

10051561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16511.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 10051561 is about 3170.4196883063. The cubic root of 10051561 is about 215.8131171052.

Adding to 10051561 its reverse (16515001), we get a palindrome (26566562).

It can be divided in two parts, 100515 and 61, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 10051561 in words is "ten million, fifty-one thousand, five hundred sixty-one".