53220605 has 4 divisors (see below), whose sum is σ = 63864732. Its totient is φ = 42576480.

The previous prime is 53220593. The next prime is 53220611. The reversal of 53220605 is 50602235.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41242084 + 11978521 = 6422^2 + 3461^2 .

It is not a de Polignac number, because 53220605 - 2⁴ = 53220589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5322056 + ... + 5322065.

It is an arithmetic number, because the mean of its divisors is an integer number (15966183).

Almost surely, 2^53220605 is an apocalyptic number.

It is an amenable number.

53220605 is a deficient number, since it is larger than the sum of its proper divisors (10644127).

53220605 is a wasteful number, since it uses less digits than its factorization.

53220605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10644126.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53220605 is about 7295.2453694170. The cubic root of 53220605 is about 376.1490209251.

The spelling of 53220605 in words is "fifty-three million, two hundred twenty thousand, six hundred five".