51749995 has 32 divisors (see below), whose sum is σ = 70870464. Its totient is φ = 35942400.

The previous prime is 51749993. The next prime is 51750001. The reversal of 51749995 is 59994715.

51749995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51749995 - 2¹ = 51749993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51749993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119299 + ... + 119731.

It is an arithmetic number, because the mean of its divisors is an integer number (2214702).

Almost surely, 2^51749995 is an apocalyptic number.

51749995 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51749995 is a deficient number, since it is larger than the sum of its proper divisors (19120469).

51749995 is a wasteful number, since it uses less digits than its factorization.

51749995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543.

The product of its digits is 510300, while the sum is 49.

The square root of 51749995 is about 7193.7469374450. The cubic root of 51749995 is about 372.6519836844.

The spelling of 51749995 in words is "fifty-one million, seven hundred forty-nine thousand, nine hundred ninety-five".