55542151 has 4 divisors (see below), whose sum is σ = 63476752. Its totient is φ = 47607552.

The previous prime is 55542139. The next prime is 55542161. The reversal of 55542151 is 15124555.

55542151 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.

It is a cyclic number.

It is not a de Polignac number, because 55542151 - 2¹¹ = 55540103 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 (55542121) 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, 3967290 + ... + 3967303.

It is an arithmetic number, because the mean of its divisors is an integer number (15869188).

Almost surely, 2^55542151 is an apocalyptic number.

55542151 is a deficient number, since it is larger than the sum of its proper divisors (7934601).

55542151 is an equidigital number, since it uses as much as digits as its factorization.

55542151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7934600.

The product of its digits is 5000, while the sum is 28.

The square root of 55542151 is about 7452.6606658294. The cubic root of 55542151 is about 381.5407229446.

The spelling of 55542151 in words is "fifty-five million, five hundred forty-two thousand, one hundred fifty-one".