51543155 has 8 divisors (see below), whose sum is σ = 62635200. Its totient is φ = 40712256.

The previous prime is 51543131. The next prime is 51543203. The reversal of 51543155 is 55134515.

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 51543155 - 2¹⁰ = 51542131 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, 64850 + ... + 65639.

It is an arithmetic number, because the mean of its divisors is an integer number (7829400).

Almost surely, 2^51543155 is an apocalyptic number.

51543155 is a deficient number, since it is larger than the sum of its proper divisors (11092045).

51543155 is a wasteful number, since it uses less digits than its factorization.

51543155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130573.

The product of its digits is 7500, while the sum is 29.

The square root of 51543155 is about 7179.3561689054. The cubic root of 51543155 is about 372.1548354369.

The spelling of 51543155 in words is "fifty-one million, five hundred forty-three thousand, one hundred fifty-five".