53617819 has 2 divisors, whose sum is σ = 53617820. Its totient is φ = 53617818.

The previous prime is 53617801. The next prime is 53617859. The reversal of 53617819 is 91871635.

It is an a-pointer prime, because the next prime (53617859) can be obtained adding 53617819 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53617819 - 2⁵ = 53617787 is a prime.

It is a super-2 number, since 2×53617819² = 5749741028633522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53617859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26808909 + 26808910.

It is an arithmetic number, because the mean of its divisors is an integer number (26808910).

Almost surely, 2^53617819 is an apocalyptic number.

53617819 is a deficient number, since it is larger than the sum of its proper divisors (1).

53617819 is an equidigital number, since it uses as much as digits as its factorization.

53617819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 53617819 is about 7322.4189309271. The cubic root of 53617819 is about 377.0825032212.

The spelling of 53617819 in words is "fifty-three million, six hundred seventeen thousand, eight hundred nineteen".