55045501 has 4 divisors (see below), whose sum is σ = 62909152. Its totient is φ = 47181852.

The previous prime is 55045477. The next prime is 55045511. The reversal of 55045501 is 10554055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10554055 = 5 ⋅2110811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55045501 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 (55045511) 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, 3931815 + ... + 3931828.

It is an arithmetic number, because the mean of its divisors is an integer number (15727288).

Almost surely, 2^55045501 is an apocalyptic number.

It is an amenable number.

55045501 is a deficient number, since it is larger than the sum of its proper divisors (7863651).

55045501 is an equidigital number, since it uses as much as digits as its factorization.

55045501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7863650.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 55045501 is about 7419.2655296869. The cubic root of 55045501 is about 380.4000887696.

Adding to 55045501 its reverse (10554055), we get a palindrome (65599556).

The spelling of 55045501 in words is "fifty-five million, forty-five thousand, five hundred one".