51654963 has 4 divisors (see below), whose sum is σ = 68873288. Its totient is φ = 34436640.

The previous prime is 51654949. The next prime is 51654971. The reversal of 51654963 is 36945615.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51654963 - 2⁴ = 51654947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51653963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8609158 + ... + 8609163.

It is an arithmetic number, because the mean of its divisors is an integer number (17218322).

Almost surely, 2^51654963 is an apocalyptic number.

51654963 is a deficient number, since it is larger than the sum of its proper divisors (17218325).

51654963 is a wasteful number, since it uses less digits than its factorization.

51654963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17218324.

The product of its digits is 97200, while the sum is 39.

The square root of 51654963 is about 7187.1387213550. The cubic root of 51654963 is about 372.4237352689.

The spelling of 51654963 in words is "fifty-one million, six hundred fifty-four thousand, nine hundred sixty-three".