51373855 has 16 divisors (see below), whose sum is σ = 66608640. Its totient is φ = 37813248.

The previous prime is 51373849. The next prime is 51373873. The reversal of 51373855 is 55837315.

It is a cyclic number.

It is not a de Polignac number, because 51373855 - 2¹³ = 51365663 is a prime.

It is a super-2 number, since 2×51373855² = 5278545955122050, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21826 + ... + 24064.

It is an arithmetic number, because the mean of its divisors is an integer number (4163040).

Almost surely, 2^51373855 is an apocalyptic number.

51373855 is a deficient number, since it is larger than the sum of its proper divisors (15234785).

51373855 is a wasteful number, since it uses less digits than its factorization.

51373855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610.

The product of its digits is 63000, while the sum is 37.

The square root of 51373855 is about 7167.5557200485. Note that the first 3 decimals coincide. The cubic root of 51373855 is about 371.7469253189.

The spelling of 51373855 in words is "fifty-one million, three hundred seventy-three thousand, eight hundred fifty-five".