55154747 has 4 divisors (see below), whose sum is σ = 55385760. Its totient is φ = 54923736.

The previous prime is 55154707. The next prime is 55154761. The reversal of 55154747 is 74745155.

55154747 is nontrivially palindromic in base 13.

55154747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74745155 = 5 ⋅14949031.

It is a cyclic number.

It is not a de Polignac number, because 55154747 - 2⁶ = 55154683 is a prime.

It is a super-2 number, since 2×55154747² = 6084092233268018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55154747.

It is not an unprimeable number, because it can be changed into a prime (55154707) 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 3 ways as a sum of consecutive naturals, for example, 115148 + ... + 115625.

It is an arithmetic number, because the mean of its divisors is an integer number (13846440).

Almost surely, 2^55154747 is an apocalyptic number.

55154747 is a deficient number, since it is larger than the sum of its proper divisors (231013).

55154747 is a wasteful number, since it uses less digits than its factorization.

55154747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231012.

The product of its digits is 98000, while the sum is 38.

The square root of 55154747 is about 7426.6241994597. The cubic root of 55154747 is about 380.6515760269.

The spelling of 55154747 in words is "fifty-five million, one hundred fifty-four thousand, seven hundred forty-seven".