55039513 has 2 divisors, whose sum is σ = 55039514. Its totient is φ = 55039512.

The previous prime is 55039499. The next prime is 55039553. The reversal of 55039513 is 31593055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32353344 + 22686169 = 5688^2 + 4763^2 .

It is a cyclic number.

It is not a de Polignac number, because 55039513 - 2⁹ = 55039001 is a prime.

It is not a weakly prime, because it can be changed into another prime (55039553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27519756 + 27519757.

It is an arithmetic number, because the mean of its divisors is an integer number (27519757).

Almost surely, 2^55039513 is an apocalyptic number.

It is an amenable number.

55039513 is a deficient number, since it is larger than the sum of its proper divisors (1).

55039513 is an equidigital number, since it uses as much as digits as its factorization.

55039513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10125, while the sum is 31.

The square root of 55039513 is about 7418.8619747236. The cubic root of 55039513 is about 380.3862946157.

The spelling of 55039513 in words is "fifty-five million, thirty-nine thousand, five hundred thirteen".