53492981 has 2 divisors, whose sum is σ = 53492982. Its totient is φ = 53492980.

The previous prime is 53492951. The next prime is 53492983. The reversal of 53492981 is 18929435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52432081 + 1060900 = 7241^2 + 1030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53492981 is a prime.

It is a super-2 number, since 2×53492981² = 5722998032532722, which contains 22 as substring.

Together with 53492983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53492983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26746490 + 26746491.

It is an arithmetic number, because the mean of its divisors is an integer number (26746491).

Almost surely, 2^53492981 is an apocalyptic number.

It is an amenable number.

53492981 is a deficient number, since it is larger than the sum of its proper divisors (1).

53492981 is an equidigital number, since it uses as much as digits as its factorization.

53492981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 53492981 is about 7313.8895944634. The cubic root of 53492981 is about 376.7896229316.

The spelling of 53492981 in words is "fifty-three million, four hundred ninety-two thousand, nine hundred eighty-one".