51496971 has 8 divisors (see below), whose sum is σ = 69342864. Its totient is φ = 33991200.

The previous prime is 51496969. The next prime is 51496979. The reversal of 51496971 is 17969415.

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

It is not a de Polignac number, because 51496971 - 2¹ = 51496969 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51496979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84676 + ... + 85281.

It is an arithmetic number, because the mean of its divisors is an integer number (8667858).

Almost surely, 2^51496971 is an apocalyptic number.

51496971 is a deficient number, since it is larger than the sum of its proper divisors (17845893).

51496971 is a wasteful number, since it uses less digits than its factorization.

51496971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170061.

The product of its digits is 68040, while the sum is 42.

The square root of 51496971 is about 7176.1390036704. The cubic root of 51496971 is about 372.0436487689.

The spelling of 51496971 in words is "fifty-one million, four hundred ninety-six thousand, nine hundred seventy-one".