52288821 has 80 divisors (see below), whose sum is σ = 93671424. Its totient is φ = 28740096.

The previous prime is 52288799. The next prime is 52288823. The reversal of 52288821 is 12888225.

It is a happy number.

It is not a de Polignac number, because 52288821 - 2¹⁸ = 52026677 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52288823) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 411660 + ... + 411786.

Almost surely, 2^52288821 is an apocalyptic number.

52288821 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

52288821 is a deficient number, since it is larger than the sum of its proper divisors (41382603).

52288821 is a wasteful number, since it uses less digits than its factorization.

52288821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 183 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 52288821 is about 7231.1009535201. The cubic root of 52288821 is about 373.9408835423.

The spelling of 52288821 in words is "fifty-two million, two hundred eighty-eight thousand, eight hundred twenty-one".