53941681 has 2 divisors, whose sum is σ = 53941682. Its totient is φ = 53941680.

The previous prime is 53941673. The next prime is 53941687. The reversal of 53941681 is 18614935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49280400 + 4661281 = 7020^2 + 2159^2 .

It is a cyclic number.

It is not a de Polignac number, because 53941681 - 2³ = 53941673 is a prime.

It is a super-2 number, since 2×53941681² = 5819409898211522, which contains 22 as substring.

It is the 7345-th Hogben number.

It is a self number, because there is not a number n which added to its sum of digits gives 53941681.

It is not a weakly prime, because it can be changed into another prime (53941687) by changing a digit.

It is a nontrivial repunit in base 7344.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26970840 + 26970841.

It is an arithmetic number, because the mean of its divisors is an integer number (26970841).

Almost surely, 2^53941681 is an apocalyptic number.

It is an amenable number.

53941681 is a deficient number, since it is larger than the sum of its proper divisors (1).

53941681 is an equidigital number, since it uses as much as digits as its factorization.

53941681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 53941681 is about 7344.5000510586. The cubic root of 53941681 is about 377.8401968148.

The spelling of 53941681 in words is "fifty-three million, nine hundred forty-one thousand, six hundred eighty-one".