51149829 has 8 divisors (see below), whose sum is σ = 69021792. Its totient is φ = 33688880.

The previous prime is 51149809. The next prime is 51149831. The reversal of 51149829 is 92894115.

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

It is a cyclic number.

It is not a de Polignac number, because 51149829 - 2⁵ = 51149797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51149809) 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 in 7 ways as a sum of consecutive naturals, for example, 102462 + ... + 102959.

It is an arithmetic number, because the mean of its divisors is an integer number (8627724).

Almost surely, 2^51149829 is an apocalyptic number.

It is an amenable number.

51149829 is a deficient number, since it is larger than the sum of its proper divisors (17871963).

51149829 is a wasteful number, since it uses less digits than its factorization.

51149829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205507.

The product of its digits is 25920, while the sum is 39.

The square root of 51149829 is about 7151.9108635385. The cubic root of 51149829 is about 371.2057789499.

The spelling of 51149829 in words is "fifty-one million, one hundred forty-nine thousand, eight hundred twenty-nine".