53547219949 has 2 divisors, whose sum is σ = 53547219950. Its totient is φ = 53547219948.

The previous prime is 53547219923. The next prime is 53547219983. The reversal of 53547219949 is 94991274535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48838790025 + 4708429924 = 220995^2 + 68618^2 .

It is a cyclic number.

It is not a de Polignac number, because 53547219949 - 2⁹ = 53547219437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53547219893 and 53547219902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53547219919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26773609974 + 26773609975.

It is an arithmetic number, because the mean of its divisors is an integer number (26773609975).

Almost surely, 2^53547219949 is an apocalyptic number.

It is an amenable number.

53547219949 is a deficient number, since it is larger than the sum of its proper divisors (1).

53547219949 is an equidigital number, since it uses as much as digits as its factorization.

53547219949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12247200, while the sum is 58.

The spelling of 53547219949 in words is "fifty-three billion, five hundred forty-seven million, two hundred nineteen thousand, nine hundred forty-nine".