51080494 has 4 divisors (see below), whose sum is σ = 76620744. Its totient is φ = 25540246.

The previous prime is 51080479. The next prime is 51080537. The reversal of 51080494 is 49408015.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49408015 = 5 ⋅9881603.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12770122 + ... + 12770125.

It is an arithmetic number, because the mean of its divisors is an integer number (19155186).

Almost surely, 2^51080494 is an apocalyptic number.

51080494 is a deficient number, since it is larger than the sum of its proper divisors (25540250).

51080494 is a wasteful number, since it uses less digits than its factorization.

51080494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25540249.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 51080494 is about 7147.0619138217. The cubic root of 51080494 is about 371.0379765592.

The spelling of 51080494 in words is "fifty-one million, eighty thousand, four hundred ninety-four".