53981737 has 2 divisors, whose sum is σ = 53981738. Its totient is φ = 53981736.

The previous prime is 53981729. The next prime is 53981747. The reversal of 53981737 is 73718935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33767721 + 20214016 = 5811^2 + 4496^2 .

It is a cyclic number.

It is not a de Polignac number, because 53981737 - 2³ = 53981729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53981693 and 53981702.

It is not a weakly prime, because it can be changed into another prime (53981747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26990868 + 26990869.

It is an arithmetic number, because the mean of its divisors is an integer number (26990869).

Almost surely, 2^53981737 is an apocalyptic number.

It is an amenable number.

53981737 is a deficient number, since it is larger than the sum of its proper divisors (1).

53981737 is an equidigital number, since it uses as much as digits as its factorization.

53981737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 43.

The square root of 53981737 is about 7347.2264835106. The cubic root of 53981737 is about 377.9336991673.

The spelling of 53981737 in words is "fifty-three million, nine hundred eighty-one thousand, seven hundred thirty-seven".