53213707 has 4 divisors (see below), whose sum is σ = 53854920. Its totient is φ = 52572496.

The previous prime is 53213687. The next prime is 53213717. The reversal of 53213707 is 70731235.

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

It is a cyclic number.

It is not a de Polignac number, because 53213707 - 2¹¹ = 53211659 is a prime.

It is a super-2 number, since 2×53213707² = 5663397225363698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53213717) 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, 320482 + ... + 320647.

It is an arithmetic number, because the mean of its divisors is an integer number (13463730).

Almost surely, 2^53213707 is an apocalyptic number.

53213707 is a deficient number, since it is larger than the sum of its proper divisors (641213).

53213707 is an equidigital number, since it uses as much as digits as its factorization.

53213707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641212.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 53213707 is about 7294.7725804167. The cubic root of 53213707 is about 376.1327691491.

The spelling of 53213707 in words is "fifty-three million, two hundred thirteen thousand, seven hundred seven".