55847749 has 4 divisors (see below), whose sum is σ = 58275936. Its totient is φ = 53419564.

The previous prime is 55847747. The next prime is 55847809. The reversal of 55847749 is 94774855.

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.

It is a cyclic number.

It is not a de Polignac number, because 55847749 - 2¹ = 55847747 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 (55847741) 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, 1214059 + ... + 1214104.

It is an arithmetic number, because the mean of its divisors is an integer number (14568984).

Almost surely, 2^55847749 is an apocalyptic number.

It is an amenable number.

55847749 is a deficient number, since it is larger than the sum of its proper divisors (2428187).

55847749 is a wasteful number, since it uses less digits than its factorization.

55847749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428186.

The product of its digits is 1411200, while the sum is 49.

The square root of 55847749 is about 7473.1351519961. The cubic root of 55847749 is about 382.2392008068.

The spelling of 55847749 in words is "fifty-five million, eight hundred forty-seven thousand, seven hundred forty-nine".