51749005 has 32 divisors (see below), whose sum is σ = 78059520. Its totient is φ = 31993920.

The previous prime is 51748993. The next prime is 51749017. The reversal of 51749005 is 50094715.

It is an interprime number because it is at equal distance from previous prime (51748993) and next prime (51749017).

It is not a de Polignac number, because 51749005 - 2⁵ = 51748973 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 53032 + ... + 53998.

It is an arithmetic number, because the mean of its divisors is an integer number (2439360).

Almost surely, 2^51749005 is an apocalyptic number.

51749005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51749005 is a deficient number, since it is larger than the sum of its proper divisors (26310515).

51749005 is a wasteful number, since it uses less digits than its factorization.

51749005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 51749005 is about 7193.6781273560. The cubic root of 51749005 is about 372.6496073375.

The spelling of 51749005 in words is "fifty-one million, seven hundred forty-nine thousand, five".