52021554 has 32 divisors (see below), whose sum is σ = 112326144. Its totient is φ = 15966720.

The previous prime is 52021553. The next prime is 52021559. The reversal of 52021554 is 45512025.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (52021553) 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, 51999 + ... + 52989.

It is an arithmetic number, because the mean of its divisors is an integer number (3510192).

Almost surely, 2^52021554 is an apocalyptic number.

52021554 is an abundant number, since it is smaller than the sum of its proper divisors (60304590).

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

52021554 is a wasteful number, since it uses less digits than its factorization.

52021554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 52021554 is about 7212.5968970961. The cubic root of 52021554 is about 373.3026794205.

Adding to 52021554 its reverse (45512025), we get a palindrome (97533579).

The spelling of 52021554 in words is "fifty-two million, twenty-one thousand, five hundred fifty-four".