55003139 has 2 divisors, whose sum is σ = 55003140. Its totient is φ = 55003138.

The previous prime is 55003129. The next prime is 55003147. The reversal of 55003139 is 93130055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55003139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55003129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27501569 + 27501570.

It is an arithmetic number, because the mean of its divisors is an integer number (27501570).

Almost surely, 2^55003139 is an apocalyptic number.

55003139 is a deficient number, since it is larger than the sum of its proper divisors (1).

55003139 is an equidigital number, since it uses as much as digits as its factorization.

55003139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2025, while the sum is 26.

The square root of 55003139 is about 7416.4101154130. The cubic root of 55003139 is about 380.3024807675.

The spelling of 55003139 in words is "fifty-five million, three thousand, one hundred thirty-nine".