51241555 has 4 divisors (see below), whose sum is σ = 61489872. Its totient is φ = 40993240.

The previous prime is 51241549. The next prime is 51241571. The reversal of 51241555 is 55514215.

51241555 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: 55514215 = 5 ⋅11102843.

It is not a de Polignac number, because 51241555 - 2⁵ = 51241523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 5124151 + ... + 5124160.

It is an arithmetic number, because the mean of its divisors is an integer number (15372468).

Almost surely, 2^51241555 is an apocalyptic number.

51241555 is a deficient number, since it is larger than the sum of its proper divisors (10248317).

51241555 is a wasteful number, since it uses less digits than its factorization.

51241555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10248316.

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

The square root of 51241555 is about 7158.3206829535. The cubic root of 51241555 is about 371.4275384939.

The spelling of 51241555 in words is "fifty-one million, two hundred forty-one thousand, five hundred fifty-five".