53917481 has 4 divisors (see below), whose sum is σ = 53943252. Its totient is φ = 53891712.

The previous prime is 53917477. The next prime is 53917499. The reversal of 53917481 is 18471935.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43296400 + 10621081 = 6580^2 + 3259^2 .

It is a cyclic number.

It is not a de Polignac number, because 53917481 - 2² = 53917477 is a prime.

It is a super-2 number, since 2×53917481² = 5814189514770722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53917441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9440 + ... + 14033.

It is an arithmetic number, because the mean of its divisors is an integer number (13485813).

Almost surely, 2^53917481 is an apocalyptic number.

It is an amenable number.

53917481 is a deficient number, since it is larger than the sum of its proper divisors (25771).

53917481 is a wasteful number, since it uses less digits than its factorization.

53917481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25770.

The product of its digits is 30240, while the sum is 38.

The square root of 53917481 is about 7342.8523749290. The cubic root of 53917481 is about 377.7836845450.

The spelling of 53917481 in words is "fifty-three million, nine hundred seventeen thousand, four hundred eighty-one".