53881897 has 2 divisors, whose sum is σ = 53881898. Its totient is φ = 53881896.

The previous prime is 53881843. The next prime is 53881901. The reversal of 53881897 is 79818835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31404816 + 22477081 = 5604^2 + 4741^2 .

It is a cyclic number.

It is not a de Polignac number, because 53881897 - 2²³ = 45493289 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53881897.

It is not a weakly prime, because it can be changed into another prime (53881097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26940948 + 26940949.

It is an arithmetic number, because the mean of its divisors is an integer number (26940949).

Almost surely, 2^53881897 is an apocalyptic number.

It is an amenable number.

53881897 is a deficient number, since it is larger than the sum of its proper divisors (1).

53881897 is an equidigital number, since it uses as much as digits as its factorization.

53881897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 49.

The square root of 53881897 is about 7340.4289384204. The cubic root of 53881897 is about 377.7005574353.

The spelling of 53881897 in words is "fifty-three million, eight hundred eighty-one thousand, eight hundred ninety-seven".