55154191 has 6 divisors (see below), whose sum is σ = 55432176. Its totient is φ = 54877500.

The previous prime is 55154179. The next prime is 55154219. The reversal of 55154191 is 19145155.

55154191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55154191 - 2⁷ = 55154063 is a prime.

It is a super-3 number, since 3×55154191³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55157191) 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 5 ways as a sum of consecutive naturals, for example, 73066 + ... + 73816.

It is an arithmetic number, because the mean of its divisors is an integer number (9238696).

Almost surely, 2^55154191 is an apocalyptic number.

55154191 is a deficient number, since it is larger than the sum of its proper divisors (277985).

55154191 is an frugal number, since it uses more digits than its factorization.

55154191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293 (or 1022 counting only the distinct ones).

The product of its digits is 4500, while the sum is 31.

The square root of 55154191 is about 7426.5867664762. The cubic root of 55154191 is about 380.6502969410.

The spelling of 55154191 in words is "fifty-five million, one hundred fifty-four thousand, one hundred ninety-one".