53213807 has 4 divisors (see below), whose sum is σ = 54652056. Its totient is φ = 51775560.

The previous prime is 53213779. The next prime is 53213827. The reversal of 53213807 is 70831235.

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 53213807 - 2⁸ = 53213551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53213807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53213827) 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, 719069 + ... + 719142.

It is an arithmetic number, because the mean of its divisors is an integer number (13663014).

Almost surely, 2^53213807 is an apocalyptic number.

53213807 is a deficient number, since it is larger than the sum of its proper divisors (1438249).

53213807 is a wasteful number, since it uses less digits than its factorization.

53213807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438248.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 53213807 is about 7294.7794346368. The cubic root of 53213807 is about 376.1330047604.

The spelling of 53213807 in words is "fifty-three million, two hundred thirteen thousand, eight hundred seven".