53856997 has 2 divisors, whose sum is σ = 53856998. Its totient is φ = 53856996.

The previous prime is 53856967. The next prime is 53857033. The reversal of 53856997 is 79965835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41809156 + 12047841 = 6466^2 + 3471^2 .

It is a cyclic number.

It is not a de Polignac number, because 53856997 - 2¹⁹ = 53332709 is a prime.

It is a super-2 number, since 2×53856997² = 5801152251716018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53856947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26928498 + 26928499.

It is an arithmetic number, because the mean of its divisors is an integer number (26928499).

Almost surely, 2^53856997 is an apocalyptic number.

It is an amenable number.

53856997 is a deficient number, since it is larger than the sum of its proper divisors (1).

53856997 is an equidigital number, since it uses as much as digits as its factorization.

53856997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 52.

The square root of 53856997 is about 7338.7326562561. The cubic root of 53856997 is about 377.6423672485.

The spelling of 53856997 in words is "fifty-three million, eight hundred fifty-six thousand, nine hundred ninety-seven".