55249769 has 8 divisors (see below), whose sum is σ = 57952128. Its totient is φ = 52611120.

The previous prime is 55249751. The next prime is 55249787. The reversal of 55249769 is 96794255.

55249769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55249751) and next prime (55249787).

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-55249769 is a prime.

It is a super-2 number, since 2×55249769² = 6105073949106722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (55249709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14147 + ... + 17624.

It is an arithmetic number, because the mean of its divisors is an integer number (7244016).

Almost surely, 2^55249769 is an apocalyptic number.

It is an amenable number.

55249769 is a deficient number, since it is larger than the sum of its proper divisors (2702359).

55249769 is a wasteful number, since it uses less digits than its factorization.

55249769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31855.

The product of its digits is 680400, while the sum is 47.

The square root of 55249769 is about 7433.0188349015. The cubic root of 55249769 is about 380.8700493479.

The spelling of 55249769 in words is "fifty-five million, two hundred forty-nine thousand, seven hundred sixty-nine".