55555607 has 4 divisors (see below), whose sum is σ = 56603880. Its totient is φ = 54507336.

The previous prime is 55555579. The next prime is 55555631. The reversal of 55555607 is 70655555.

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 55555607 - 2⁶ = 55555543 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 (55555307) 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, 524057 + ... + 524162.

It is an arithmetic number, because the mean of its divisors is an integer number (14150970).

Almost surely, 2^55555607 is an apocalyptic number.

55555607 is a deficient number, since it is larger than the sum of its proper divisors (1048273).

55555607 is a wasteful number, since it uses less digits than its factorization.

55555607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048272.

The product of its (nonzero) digits is 131250, while the sum is 38.

The square root of 55555607 is about 7453.5633759967. The cubic root of 55555607 is about 381.5715319628.

The spelling of 55555607 in words is "fifty-five million, five hundred fifty-five thousand, six hundred seven".