53655321 has 4 divisors (see below), whose sum is σ = 71540432. Its totient is φ = 35770212.

The previous prime is 53655319. The next prime is 53655331. The reversal of 53655321 is 12355635.

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.

It is not a de Polignac number, because 53655321 - 2¹ = 53655319 is a prime.

It is a super-2 number, since 2×53655321² = 5757786943226082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53655331) 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, 8942551 + ... + 8942556.

It is an arithmetic number, because the mean of its divisors is an integer number (17885108).

Almost surely, 2^53655321 is an apocalyptic number.

It is an amenable number.

53655321 is a deficient number, since it is larger than the sum of its proper divisors (17885111).

53655321 is a wasteful number, since it uses less digits than its factorization.

53655321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17885110.

The product of its digits is 13500, while the sum is 30.

The square root of 53655321 is about 7324.9792491174. The cubic root of 53655321 is about 377.1703972125.

The spelling of 53655321 in words is "fifty-three million, six hundred fifty-five thousand, three hundred twenty-one".