10547921 has 4 divisors (see below), whose sum is σ = 10650432. Its totient is φ = 10445412.

The previous prime is 10547917. The next prime is 10547941. The reversal of 10547921 is 12974501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10547921 - 2² = 10547917 is a prime.

It is a super-2 number, since 2×10547921² = 222517274844482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10547941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51101 + ... + 51306.

It is an arithmetic number, because the mean of its divisors is an integer number (2662608).

Almost surely, 2^10547921 is an apocalyptic number.

It is an amenable number.

10547921 is a deficient number, since it is larger than the sum of its proper divisors (102511).

10547921 is a wasteful number, since it uses less digits than its factorization.

10547921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102510.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 10547921 is about 3247.7563024340. The cubic root of 10547921 is about 219.3085799575.

The spelling of 10547921 in words is "ten million, five hundred forty-seven thousand, nine hundred twenty-one".