53021881 has 8 divisors (see below), whose sum is σ = 59187744. Its totient is φ = 47080320.

The previous prime is 53021863. The next prime is 53021921. The reversal of 53021881 is 18812035.

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

It is a cyclic number.

It is not a de Polignac number, because 53021881 - 2⁷ = 53021753 is a prime.

It is a super-2 number, since 2×53021881² = 5622639729556322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53021821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55576 + ... + 56521.

It is an arithmetic number, because the mean of its divisors is an integer number (7398468).

Almost surely, 2^53021881 is an apocalyptic number.

It is an amenable number.

53021881 is a deficient number, since it is larger than the sum of its proper divisors (6165863).

53021881 is a wasteful number, since it uses less digits than its factorization.

53021881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112151.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 53021881 is about 7281.6125274557. The cubic root of 53021881 is about 375.6802609443.

The spelling of 53021881 in words is "fifty-three million, twenty-one thousand, eight hundred eighty-one".