55047765 has 8 divisors (see below), whose sum is σ = 88076448. Its totient is φ = 29358800.

The previous prime is 55047743. The next prime is 55047781. The reversal of 55047765 is 56774055.

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

It is not a de Polignac number, because 55047765 - 2⁶ = 55047701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1834911 + ... + 1834940.

It is an arithmetic number, because the mean of its divisors is an integer number (11009556).

Almost surely, 2^55047765 is an apocalyptic number.

It is an amenable number.

55047765 is a deficient number, since it is larger than the sum of its proper divisors (33028683).

55047765 is a wasteful number, since it uses less digits than its factorization.

55047765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669859.

The product of its (nonzero) digits is 147000, while the sum is 39.

The square root of 55047765 is about 7419.4181038677. The cubic root of 55047765 is about 380.4053039339.

The spelling of 55047765 in words is "fifty-five million, forty-seven thousand, seven hundred sixty-five".