55883521 has 2 divisors, whose sum is σ = 55883522. Its totient is φ = 55883520.

The previous prime is 55883519. The next prime is 55883549. The reversal of 55883521 is 12538855.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55711296 + 172225 = 7464^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 55883521 - 2¹ = 55883519 is a prime.

Together with 55883519, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55883591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27941760 + 27941761.

It is an arithmetic number, because the mean of its divisors is an integer number (27941761).

Almost surely, 2^55883521 is an apocalyptic number.

It is an amenable number.

55883521 is a deficient number, since it is larger than the sum of its proper divisors (1).

55883521 is an equidigital number, since it uses as much as digits as its factorization.

55883521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48000, while the sum is 37.

The square root of 55883521 is about 7475.5281418773. The cubic root of 55883521 is about 382.3207949180.

The spelling of 55883521 in words is "fifty-five million, eight hundred eighty-three thousand, five hundred twenty-one".