53981930 has 16 divisors (see below), whose sum is σ = 97479720. Its totient is φ = 21523392.

The previous prime is 53981911. The next prime is 53981957. The reversal of 53981930 is 3918935.

It can be written as a sum of positive squares in 4 ways, for example, as 37957921 + 16024009 = 6161^2 + 4003^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5345 + ... + 11684.

Almost surely, 2^53981930 is an apocalyptic number.

53981930 is a deficient number, since it is larger than the sum of its proper divisors (43497790).

53981930 is a wasteful number, since it uses less digits than its factorization.

53981930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17353.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 53981930 is about 7347.2396177068. The cubic root of 53981930 is about 377.9341495734.

The spelling of 53981930 in words is "fifty-three million, nine hundred eighty-one thousand, nine hundred thirty".