55001539 has 2 divisors, whose sum is σ = 55001540. Its totient is φ = 55001538.

The previous prime is 55001521. The next prime is 55001549. The reversal of 55001539 is 93510055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55001539 - 2¹⁷ = 54870467 is a prime.

It is not a weakly prime, because it can be changed into another prime (55001519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27500769 + 27500770.

It is an arithmetic number, because the mean of its divisors is an integer number (27500770).

Almost surely, 2^55001539 is an apocalyptic number.

55001539 is a deficient number, since it is larger than the sum of its proper divisors (1).

55001539 is an equidigital number, since it uses as much as digits as its factorization.

55001539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3375, while the sum is 28.

The square root of 55001539 is about 7416.3022457287. The cubic root of 55001539 is about 380.2987931605.

The spelling of 55001539 in words is "fifty-five million, one thousand, five hundred thirty-nine".