10253561 has 4 divisors (see below), whose sum is σ = 10699392. Its totient is φ = 9807732.

The previous prime is 10253557. The next prime is 10253569. The reversal of 10253561 is 16535201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16535201 = 1627 ⋅10163.

It is a cyclic number.

It is not a de Polignac number, because 10253561 - 2² = 10253557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 445807 = 10253561 / (1 + 0 + 2 + 5 + 3 + 5 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10253569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222881 + ... + 222926.

It is an arithmetic number, because the mean of its divisors is an integer number (2674848).

Almost surely, 2^10253561 is an apocalyptic number.

It is an amenable number.

10253561 is a deficient number, since it is larger than the sum of its proper divisors (445831).

10253561 is an equidigital number, since it uses as much as digits as its factorization.

10253561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445830.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 10253561 is about 3202.1182051886. The cubic root of 10253561 is about 217.2492269833.

Adding to 10253561 its reverse (16535201), we get a palindrome (26788762).

The spelling of 10253561 in words is "ten million, two hundred fifty-three thousand, five hundred sixty-one".