53021976 has 64 divisors (see below), whose sum is σ = 156729600. Its totient is φ = 14625408.

The previous prime is 53021971. The next prime is 53022001. The reversal of 53021976 is 67912035.

It is a super-2 number, since 2×53021976² = 5622659877889152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53021971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570 + ... + 10313.

It is an arithmetic number, because the mean of its divisors is an integer number (2448900).

Almost surely, 2^53021976 is an apocalyptic number.

53021976 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53021976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78364800).

53021976 is an abundant number, since it is smaller than the sum of its proper divisors (103707624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53021976 is a wasteful number, since it uses less digits than its factorization.

53021976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10928 (or 10924 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 53021976 is about 7281.6190507332. The cubic root of 53021976 is about 375.6804853146.

The spelling of 53021976 in words is "fifty-three million, twenty-one thousand, nine hundred seventy-six".