55703639 has 2 divisors, whose sum is σ = 55703640. Its totient is φ = 55703638.

The previous prime is 55703623. The next prime is 55703647. The reversal of 55703639 is 93630755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55703639 - 2⁴ = 55703623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55703239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27851819 + 27851820.

It is an arithmetic number, because the mean of its divisors is an integer number (27851820).

Almost surely, 2^55703639 is an apocalyptic number.

55703639 is a deficient number, since it is larger than the sum of its proper divisors (1).

55703639 is an equidigital number, since it uses as much as digits as its factorization.

55703639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050, while the sum is 38.

The square root of 55703639 is about 7463.4870536499. The cubic root of 55703639 is about 381.9101398604.

The spelling of 55703639 in words is "fifty-five million, seven hundred three thousand, six hundred thirty-nine".