53925521 has 8 divisors (see below), whose sum is σ = 58589160. Its totient is φ = 49335552.

The previous prime is 53925517. The next prime is 53925533. The reversal of 53925521 is 12552935.

It can be written as a sum of positive squares in 4 ways, for example, as 1290496 + 52635025 = 1136^2 + 7255^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 53925521 - 2² = 53925517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53925541) 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, 16886 + ... + 19823.

It is an arithmetic number, because the mean of its divisors is an integer number (7323645).

Almost surely, 2^53925521 is an apocalyptic number.

It is an amenable number.

53925521 is a deficient number, since it is larger than the sum of its proper divisors (4663639).

53925521 is a wasteful number, since it uses less digits than its factorization.

53925521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36835.

The product of its digits is 13500, while the sum is 32.

The square root of 53925521 is about 7343.3998256938. The cubic root of 53925521 is about 377.8024615712.

The spelling of 53925521 in words is "fifty-three million, nine hundred twenty-five thousand, five hundred twenty-one".