10550921 has 2 divisors, whose sum is σ = 10550922. Its totient is φ = 10550920.

The previous prime is 10550851. The next prime is 10550929. The reversal of 10550921 is 12905501.

10550921 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6056521 + 4494400 = 2461^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 10550921 - 2²² = 6356617 is a prime.

It is a super-2 number, since 2×10550921² = 222643867896482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10550929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5275460 + 5275461.

It is an arithmetic number, because the mean of its divisors is an integer number (5275461).

Almost surely, 2^10550921 is an apocalyptic number.

It is an amenable number.

10550921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10550921 is an equidigital number, since it uses as much as digits as its factorization.

10550921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 10550921 is about 3248.2181269120. The cubic root of 10550921 is about 219.3293696271.

The spelling of 10550921 in words is "ten million, five hundred fifty thousand, nine hundred twenty-one".