51457478 has 8 divisors (see below), whose sum is σ = 77697840. Its totient is φ = 25558200.

The previous prime is 51457451. The next prime is 51457537. The reversal of 51457478 is 87475415.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84893 + ... + 85496.

It is an arithmetic number, because the mean of its divisors is an integer number (9712230).

Almost surely, 2^51457478 is an apocalyptic number.

51457478 is a deficient number, since it is larger than the sum of its proper divisors (26240362).

51457478 is a wasteful number, since it uses less digits than its factorization.

51457478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170542.

The product of its digits is 156800, while the sum is 41.

The square root of 51457478 is about 7173.3867872853. The cubic root of 51457478 is about 371.9485177532.

The spelling of 51457478 in words is "fifty-one million, four hundred fifty-seven thousand, four hundred seventy-eight".