51949786 has 8 divisors (see below), whose sum is σ = 89056800. Its totient is φ = 22264188.

The previous prime is 51949771. The next prime is 51949789. The reversal of 51949786 is 68794915.

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

It is not an unprimeable number, because it can be changed into a prime (51949789) 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, 1855336 + ... + 1855363.

It is an arithmetic number, because the mean of its divisors is an integer number (11132100).

Almost surely, 2^51949786 is an apocalyptic number.

51949786 is a deficient number, since it is larger than the sum of its proper divisors (37107014).

51949786 is a wasteful number, since it uses less digits than its factorization.

51949786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710708.

The product of its digits is 544320, while the sum is 49.

The square root of 51949786 is about 7207.6199955325. The cubic root of 51949786 is about 373.1309331967.

It can be divided in two parts, 519 and 49786, that added together give a palindrome (50305).

The spelling of 51949786 in words is "fifty-one million, nine hundred forty-nine thousand, seven hundred eighty-six".