53313213 has 4 divisors (see below), whose sum is σ = 71084288. Its totient is φ = 35542140.

The previous prime is 53313209. The next prime is 53313233. The reversal of 53313213 is 31231335.

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 53313213 - 2² = 53313209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53313213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53313233) 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, 8885533 + ... + 8885538.

It is an arithmetic number, because the mean of its divisors is an integer number (17771072).

Almost surely, 2^53313213 is an apocalyptic number.

It is an amenable number.

53313213 is a deficient number, since it is larger than the sum of its proper divisors (17771075).

53313213 is a wasteful number, since it uses less digits than its factorization.

53313213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17771074.

The product of its digits is 810, while the sum is 21.

The square root of 53313213 is about 7301.5897584019. The cubic root of 53313213 is about 376.3670707023.

Adding to 53313213 its reverse (31231335), we get a palindrome (84544548).

The spelling of 53313213 in words is "fifty-three million, three hundred thirteen thousand, two hundred thirteen".