51778094 has 4 divisors (see below), whose sum is σ = 77667144. Its totient is φ = 25889046.

The previous prime is 51778093. The next prime is 51778109. The reversal of 51778094 is 49087715.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51778093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12944522 + ... + 12944525.

It is an arithmetic number, because the mean of its divisors is an integer number (19416786).

Almost surely, 2^51778094 is an apocalyptic number.

51778094 is a deficient number, since it is larger than the sum of its proper divisors (25889050).

51778094 is a wasteful number, since it uses less digits than its factorization.

51778094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25889049.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 51778094 is about 7195.6996880081. The cubic root of 51778094 is about 372.7194184958.

The spelling of 51778094 in words is "fifty-one million, seven hundred seventy-eight thousand, ninety-four".