53671997 has 2 divisors, whose sum is σ = 53671998. Its totient is φ = 53671996.

The previous prime is 53671967. The next prime is 53672051. The reversal of 53671997 is 79917635.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47416996 + 6255001 = 6886^2 + 2501^2 .

It is a cyclic number.

It is not a de Polignac number, because 53671997 - 2⁸ = 53671741 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53671957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26835998 + 26835999.

It is an arithmetic number, because the mean of its divisors is an integer number (26835999).

Almost surely, 2^53671997 is an apocalyptic number.

It is an amenable number.

53671997 is a deficient number, since it is larger than the sum of its proper divisors (1).

53671997 is an equidigital number, since it uses as much as digits as its factorization.

53671997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 357210, while the sum is 47.

The square root of 53671997 is about 7326.1174574259. The cubic root of 53671997 is about 377.2094678453.

The spelling of 53671997 in words is "fifty-three million, six hundred seventy-one thousand, nine hundred ninety-seven".