53552439397 has 2 divisors, whose sum is σ = 53552439398. Its totient is φ = 53552439396.

The previous prime is 53552439383. The next prime is 53552439403. The reversal of 53552439397 is 79393425535.

It is a Cunningham number, because it is equal to 231414²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53552439396 + 1 = 231414^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 53552439397 - 2³⁵ = 19192701029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53552419397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26776219698 + 26776219699.

It is an arithmetic number, because the mean of its divisors is an integer number (26776219699).

Almost surely, 2^53552439397 is an apocalyptic number.

It is an amenable number.

53552439397 is a deficient number, since it is larger than the sum of its proper divisors (1).

53552439397 is an equidigital number, since it uses as much as digits as its factorization.

53552439397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15309000, while the sum is 55.

The spelling of 53552439397 in words is "fifty-three billion, five hundred fifty-two million, four hundred thirty-nine thousand, three hundred ninety-seven".