53721995 has 16 divisors (see below), whose sum is σ = 65536128. Its totient is φ = 42270720.

The previous prime is 53721961. The next prime is 53722003. The reversal of 53721995 is 59912735.

It is not a de Polignac number, because 53721995 - 2¹⁶ = 53656459 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124430 + ... + 124860.

It is an arithmetic number, because the mean of its divisors is an integer number (4096008).

Almost surely, 2^53721995 is an apocalyptic number.

53721995 is a deficient number, since it is larger than the sum of its proper divisors (11814133).

53721995 is a wasteful number, since it uses less digits than its factorization.

53721995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790.

The product of its digits is 85050, while the sum is 41.

The square root of 53721995 is about 7329.5289753162. The cubic root of 53721995 is about 377.3265609716.

The spelling of 53721995 in words is "fifty-three million, seven hundred twenty-one thousand, nine hundred ninety-five".