253573561 has 8 divisors (see below), whose sum is σ = 261072000. Its totient is φ = 246137760.

The previous prime is 253573519. The next prime is 253573577. The reversal of 253573561 is 165375352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253573561 - 2⁷ = 253573433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253573561.

It is not an unprimeable number, because it can be changed into a prime (253573501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7381 + ... + 23698.

It is an arithmetic number, because the mean of its divisors is an integer number (32634000).

Almost surely, 2^253573561 is an apocalyptic number.

It is an amenable number.

253573561 is a deficient number, since it is larger than the sum of its proper divisors (7498439).

253573561 is a wasteful number, since it uses less digits than its factorization.

253573561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31319.

The product of its digits is 94500, while the sum is 37.

The square root of 253573561 is about 15923.9932491822. The cubic root of 253573561 is about 632.9479387198.

The spelling of 253573561 in words is "two hundred fifty-three million, five hundred seventy-three thousand, five hundred sixty-one".