53212891 has 2 divisors, whose sum is σ = 53212892. Its totient is φ = 53212890.

The previous prime is 53212889. The next prime is 53212903. The reversal of 53212891 is 19821235.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53212891 - 2¹ = 53212889 is a prime.

It is a super-2 number, since 2×53212891² = 5663223537155762, which contains 22 as substring.

Together with 53212889, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53212811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26606445 + 26606446.

It is an arithmetic number, because the mean of its divisors is an integer number (26606446).

Almost surely, 2^53212891 is an apocalyptic number.

53212891 is a deficient number, since it is larger than the sum of its proper divisors (1).

53212891 is an equidigital number, since it uses as much as digits as its factorization.

53212891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 53212891 is about 7294.7166497404. The cubic root of 53212891 is about 376.1308465498.

The spelling of 53212891 in words is "fifty-three million, two hundred twelve thousand, eight hundred ninety-one".