51078494 has 8 divisors (see below), whose sum is σ = 76891248. Its totient is φ = 25448080.

The previous prime is 51078491. The next prime is 51078509. The reversal of 51078494 is 49487015.

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

It is a super-3 number, since 3×51078494³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51078491) 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, 44882 + ... + 46005.

It is an arithmetic number, because the mean of its divisors is an integer number (9611406).

Almost surely, 2^51078494 is an apocalyptic number.

51078494 is a deficient number, since it is larger than the sum of its proper divisors (25812754).

51078494 is a wasteful number, since it uses less digits than its factorization.

51078494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91170.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 51078494 is about 7146.9219948171. The cubic root of 51078494 is about 371.0331339694.

The spelling of 51078494 in words is "fifty-one million, seventy-eight thousand, four hundred ninety-four".