55151747 has 16 divisors (see below), whose sum is σ = 65299392. Its totient is φ = 45601920.

The previous prime is 55151743. The next prime is 55151749. The reversal of 55151747 is 74715155.

It is not a de Polignac number, because 55151747 - 2² = 55151743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55151743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21413 + ... + 23849.

It is an arithmetic number, because the mean of its divisors is an integer number (4081212).

Almost surely, 2^55151747 is an apocalyptic number.

55151747 is a deficient number, since it is larger than the sum of its proper divisors (10147645).

55151747 is a wasteful number, since it uses less digits than its factorization.

55151747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558.

The product of its digits is 24500, while the sum is 35.

The square root of 55151747 is about 7426.4222206928. The cubic root of 55151747 is about 380.6446743820.

The spelling of 55151747 in words is "fifty-five million, one hundred fifty-one thousand, seven hundred forty-seven".