10745521 has 2 divisors, whose sum is σ = 10745522. Its totient is φ = 10745520.

The previous prime is 10745489. The next prime is 10745533. The reversal of 10745521 is 12554701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10240000 + 505521 = 3200^2 + 711^2 .

It is an emirp because it is prime and its reverse (12554701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10745521 - 2⁵ = 10745489 is a prime.

It is a super-2 number, since 2×10745521² = 230932443122882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10743521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5372760 + 5372761.

It is an arithmetic number, because the mean of its divisors is an integer number (5372761).

Almost surely, 2^10745521 is an apocalyptic number.

It is an amenable number.

10745521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10745521 is an equidigital number, since it uses as much as digits as its factorization.

10745521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 10745521 is about 3278.0361498922. The cubic root of 10745521 is about 220.6695921924.

The spelling of 10745521 in words is "ten million, seven hundred forty-five thousand, five hundred twenty-one".