51655463 has 4 divisors (see below), whose sum is σ = 51669840. Its totient is φ = 51641088.

The previous prime is 51655423. The next prime is 51655481. The reversal of 51655463 is 36455615.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51655463 - 2⁶ = 51655399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51655403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3431 + ... + 10727.

It is an arithmetic number, because the mean of its divisors is an integer number (12917460).

Almost surely, 2^51655463 is an apocalyptic number.

51655463 is a deficient number, since it is larger than the sum of its proper divisors (14377).

51655463 is an equidigital number, since it uses as much as digits as its factorization.

51655463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14376.

The product of its digits is 54000, while the sum is 35.

The square root of 51655463 is about 7187.1735056279. The cubic root of 51655463 is about 372.4249369041.

The spelling of 51655463 in words is "fifty-one million, six hundred fifty-five thousand, four hundred sixty-three".