55076521 has 2 divisors, whose sum is σ = 55076522. Its totient is φ = 55076520.

The previous prime is 55076519. The next prime is 55076533. The reversal of 55076521 is 12567055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48497296 + 6579225 = 6964^2 + 2565^2 .

It is a cyclic number.

It is not a de Polignac number, because 55076521 - 2¹ = 55076519 is a prime.

Together with 55076519, 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 (55076551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27538260 + 27538261.

It is an arithmetic number, because the mean of its divisors is an integer number (27538261).

Almost surely, 2^55076521 is an apocalyptic number.

It is an amenable number.

55076521 is a deficient number, since it is larger than the sum of its proper divisors (1).

55076521 is an equidigital number, since it uses as much as digits as its factorization.

55076521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 55076521 is about 7421.3557386774. The cubic root of 55076521 is about 380.4715314529.

The spelling of 55076521 in words is "fifty-five million, seventy-six thousand, five hundred twenty-one".