51893155 has 8 divisors (see below), whose sum is σ = 63327600. Its totient is φ = 40810656.

The previous prime is 51893147. The next prime is 51893189. The reversal of 51893155 is 55139815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51893155 - 2³ = 51893147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87660 + ... + 88249.

It is an arithmetic number, because the mean of its divisors is an integer number (7915950).

Almost surely, 2^51893155 is an apocalyptic number.

51893155 is a deficient number, since it is larger than the sum of its proper divisors (11434445).

51893155 is a wasteful number, since it uses less digits than its factorization.

51893155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175973.

The product of its digits is 27000, while the sum is 37.

The square root of 51893155 is about 7203.6903736904. The cubic root of 51893155 is about 372.9952992673.

The spelling of 51893155 in words is "fifty-one million, eight hundred ninety-three thousand, one hundred fifty-five".