55151247 has 16 divisors (see below), whose sum is σ = 78624000. Its totient is φ = 34265472.

The previous prime is 55151237. The next prime is 55151267. The reversal of 55151247 is 74215155.

55151247 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 55151247 - 2⁶ = 55151183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55151207) 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 15 ways as a sum of consecutive naturals, for example, 4 + ... + 10502.

It is an arithmetic number, because the mean of its divisors is an integer number (4914000).

Almost surely, 2^55151247 is an apocalyptic number.

55151247 is a deficient number, since it is larger than the sum of its proper divisors (23472753).

55151247 is a wasteful number, since it uses less digits than its factorization.

55151247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10622.

The product of its digits is 7000, while the sum is 30.

The square root of 55151247 is about 7426.3885570309. The cubic root of 55151247 is about 380.6435240836.

The spelling of 55151247 in words is "fifty-five million, one hundred fifty-one thousand, two hundred forty-seven".