51494797 has 8 divisors (see below), whose sum is σ = 52670240. Its totient is φ = 50330160.

The previous prime is 51494789. The next prime is 51494803. The reversal of 51494797 is 79749415.

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 51494797 - 2³ = 51494789 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 (51494497) 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, 7354 + ... + 12532.

It is an arithmetic number, because the mean of its divisors is an integer number (6583780).

Almost surely, 2^51494797 is an apocalyptic number.

It is an amenable number.

51494797 is a deficient number, since it is larger than the sum of its proper divisors (1175443).

51494797 is a wasteful number, since it uses less digits than its factorization.

51494797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5403.

The product of its digits is 317520, while the sum is 46.

The square root of 51494797 is about 7175.9875278598. The cubic root of 51494797 is about 372.0384132877.

The spelling of 51494797 in words is "fifty-one million, four hundred ninety-four thousand, seven hundred ninety-seven".