10501561 has 8 divisors (see below), whose sum is σ = 12166784. Its totient is φ = 8877600.

The previous prime is 10501559. The next prime is 10501583. The reversal of 10501561 is 16510501.

10501561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 10501561 - 2¹ = 10501559 is a prime.

It is a super-2 number, since 2×10501561² = 220565566873442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10501531) 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, 9765 + ... + 10786.

It is an arithmetic number, because the mean of its divisors is an integer number (1520848).

Almost surely, 2^10501561 is an apocalyptic number.

It is an amenable number.

10501561 is a deficient number, since it is larger than the sum of its proper divisors (1665223).

10501561 is an equidigital number, since it uses as much as digits as its factorization.

10501561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20631.

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

The square root of 10501561 is about 3240.6112077816. The cubic root of 10501561 is about 218.9868079319.

The spelling of 10501561 in words is "ten million, five hundred one thousand, five hundred sixty-one".