51442455 has 16 divisors (see below), whose sum is σ = 82583424. Its totient is φ = 27344160.

The previous prime is 51442453. The next prime is 51442499. The reversal of 51442455 is 55424415.

51442455 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 51442455 - 2¹ = 51442453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51442451) 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, 981 + ... + 10190.

It is an arithmetic number, because the mean of its divisors is an integer number (5161464).

Almost surely, 2^51442455 is an apocalyptic number.

51442455 is a deficient number, since it is larger than the sum of its proper divisors (31140969).

51442455 is a wasteful number, since it uses less digits than its factorization.

51442455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11486.

The product of its digits is 16000, while the sum is 30.

The square root of 51442455 is about 7172.3395764562. The cubic root of 51442455 is about 371.9123174659.

The spelling of 51442455 in words is "fifty-one million, four hundred forty-two thousand, four hundred fifty-five".