55051513 has 8 divisors (see below), whose sum is σ = 60369696. Its totient is φ = 49785600.

The previous prime is 55051487. The next prime is 55051519. The reversal of 55051513 is 31515055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55051513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55051519) 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, 10843 + ... + 15088.

It is an arithmetic number, because the mean of its divisors is an integer number (7546212).

Almost surely, 2^55051513 is an apocalyptic number.

It is an amenable number.

55051513 is a deficient number, since it is larger than the sum of its proper divisors (5318183).

55051513 is a wasteful number, since it uses less digits than its factorization.

55051513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26135.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 55051513 is about 7419.6706800235. The cubic root of 55051513 is about 380.4139372043.

Adding to 55051513 its reverse (31515055), we get a palindrome (86566568).

The spelling of 55051513 in words is "fifty-five million, fifty-one thousand, five hundred thirteen".