53213857 has 2 divisors, whose sum is σ = 53213858. Its totient is φ = 53213856.

The previous prime is 53213827. The next prime is 53213863. The reversal of 53213857 is 75831235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52548001 + 665856 = 7249^2 + 816^2 .

It is a cyclic number.

It is not a de Polignac number, because 53213857 - 2¹⁹ = 52689569 is a prime.

It is not a weakly prime, because it can be changed into another prime (53213827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26606928 + 26606929.

It is an arithmetic number, because the mean of its divisors is an integer number (26606929).

Almost surely, 2^53213857 is an apocalyptic number.

It is an amenable number.

53213857 is a deficient number, since it is larger than the sum of its proper divisors (1).

53213857 is an equidigital number, since it uses as much as digits as its factorization.

53213857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 53213857 is about 7294.7828617444. The cubic root of 53213857 is about 376.1331225660.

The spelling of 53213857 in words is "fifty-three million, two hundred thirteen thousand, eight hundred fifty-seven".