55060639 has 4 divisors (see below), whose sum is σ = 55144600. Its totient is φ = 54976680.

The previous prime is 55060631. The next prime is 55060717. The reversal of 55060639 is 93606055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55060639 - 2³ = 55060631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55060631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40989 + ... + 42310.

It is an arithmetic number, because the mean of its divisors is an integer number (13786150).

Almost surely, 2^55060639 is an apocalyptic number.

55060639 is a deficient number, since it is larger than the sum of its proper divisors (83961).

55060639 is an equidigital number, since it uses as much as digits as its factorization.

55060639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83960.

The product of its (nonzero) digits is 24300, while the sum is 34.

The square root of 55060639 is about 7420.2856414022. The cubic root of 55060639 is about 380.4349567039.

The spelling of 55060639 in words is "fifty-five million, sixty thousand, six hundred thirty-nine".