10523621 has 2 divisors, whose sum is σ = 10523622. Its totient is φ = 10523620.

The previous prime is 10523599. The next prime is 10523641. The reversal of 10523621 is 12632501.

It is an a-pointer prime, because the next prime (10523641) can be obtained adding 10523621 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10048900 + 474721 = 3170^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 10523621 - 2¹⁰ = 10522597 is a prime.

It is a super-2 number, since 2×10523621² = 221493197903282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10523593 and 10523602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10523641) 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 as a sum of consecutive naturals, namely, 5261810 + 5261811.

It is an arithmetic number, because the mean of its divisors is an integer number (5261811).

Almost surely, 2^10523621 is an apocalyptic number.

It is an amenable number.

10523621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10523621 is an equidigital number, since it uses as much as digits as its factorization.

10523621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 10523621 is about 3244.0131010833. The cubic root of 10523621 is about 219.1400381771.

The spelling of 10523621 in words is "ten million, five hundred twenty-three thousand, six hundred twenty-one".