55506715 has 16 divisors (see below), whose sum is σ = 73022976. Its totient is φ = 40168800.

The previous prime is 55506713. The next prime is 55506739. The reversal of 55506715 is 51760555.

It is not a de Polignac number, because 55506715 - 2¹ = 55506713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55506713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9214 + ... + 13996.

It is an arithmetic number, because the mean of its divisors is an integer number (4563936).

Almost surely, 2^55506715 is an apocalyptic number.

55506715 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55506715 is a deficient number, since it is larger than the sum of its proper divisors (17516261).

55506715 is a wasteful number, since it uses less digits than its factorization.

55506715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010.

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

The square root of 55506715 is about 7450.2828805355. The cubic root of 55506715 is about 381.4595644421.

The spelling of 55506715 in words is "fifty-five million, five hundred six thousand, seven hundred fifteen".