53721754 has 8 divisors (see below), whose sum is σ = 82103220. Its totient is φ = 26354016.

The previous prime is 53721727. The next prime is 53721757. The reversal of 53721754 is 45712735.

It can be written as a sum of positive squares in 2 ways, for example, as 52171729 + 1550025 = 7223^2 + 1245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (53721757) 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, 253299 + ... + 253510.

Almost surely, 2^53721754 is an apocalyptic number.

53721754 is a deficient number, since it is larger than the sum of its proper divisors (28381466).

53721754 is a wasteful number, since it uses less digits than its factorization.

53721754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506864.

The product of its digits is 29400, while the sum is 34.

The square root of 53721754 is about 7329.5125349507. The cubic root of 53721754 is about 377.3259967344.

The spelling of 53721754 in words is "fifty-three million, seven hundred twenty-one thousand, seven hundred fifty-four".