253541521 has 8 divisors (see below), whose sum is σ = 257019840. Its totient is φ = 250084368.

The previous prime is 253541503. The next prime is 253541537. The reversal of 253541521 is 125145352.

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

It is not a de Polignac number, because 253541521 - 2²³ = 245152913 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 253541521.

It is not an unprimeable number, because it can be changed into a prime (253541221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19620 + ... + 29866.

It is an arithmetic number, because the mean of its divisors is an integer number (32127480).

Almost surely, 2^253541521 is an apocalyptic number.

It is an amenable number.

253541521 is a deficient number, since it is larger than the sum of its proper divisors (3478319).

253541521 is a wasteful number, since it uses less digits than its factorization.

253541521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10583.

The product of its digits is 6000, while the sum is 28.

The square root of 253541521 is about 15922.9871883388. The cubic root of 253541521 is about 632.9212791237.

Adding to 253541521 its reverse (125145352), we get a palindrome (378686873).

The spelling of 253541521 in words is "two hundred fifty-three million, five hundred forty-one thousand, five hundred twenty-one".