55011513 has 8 divisors (see below), whose sum is σ = 74105248. Its totient is φ = 36296064.

The previous prime is 55011499. The next prime is 55011527. The reversal of 55011513 is 31511055.

It is an interprime number because it is at equal distance from previous prime (55011499) and next prime (55011527).

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

It is not a de Polignac number, because 55011513 - 2¹⁰ = 55010489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55011513.

It is not an unprimeable number, because it can be changed into a prime (55011553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94231 + ... + 94812.

It is an arithmetic number, because the mean of its divisors is an integer number (9263156).

Almost surely, 2^55011513 is an apocalyptic number.

It is an amenable number.

55011513 is a deficient number, since it is larger than the sum of its proper divisors (19093735).

55011513 is a wasteful number, since it uses less digits than its factorization.

55011513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189143.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 55011513 is about 7416.9746527813. The cubic root of 55011513 is about 380.3217796137.

Adding to 55011513 its reverse (31511055), we get a palindrome (86522568).

The spelling of 55011513 in words is "fifty-five million, eleven thousand, five hundred thirteen".