55517506 has 16 divisors (see below), whose sum is σ = 95628960. Its totient is φ = 23906880.

The previous prime is 55517479. The next prime is 55517509. The reversal of 55517506 is 60571555.

It is not an unprimeable number, because it can be changed into a prime (55517509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65991 + ... + 66826.

It is an arithmetic number, because the mean of its divisors is an integer number (5976810).

Almost surely, 2^55517506 is an apocalyptic number.

55517506 is a deficient number, since it is larger than the sum of its proper divisors (40111454).

55517506 is a wasteful number, since it uses less digits than its factorization.

55517506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132849.

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 55517506 is about 7451.0070460308. The cubic root of 55517506 is about 381.4842825532.

The spelling of 55517506 in words is "fifty-five million, five hundred seventeen thousand, five hundred six".