51749325 has 36 divisors (see below), whose sum is σ = 93470208. Its totient is φ = 27367200.

The previous prime is 51749249. The next prime is 51749329. The reversal of 51749325 is 52394715.

51749325 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 51749325 - 2⁷ = 51749197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51749325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51749329) 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 35 ways as a sum of consecutive naturals, for example, 27670 + ... + 29480.

Almost surely, 2^51749325 is an apocalyptic number.

It is an amenable number.

51749325 is a deficient number, since it is larger than the sum of its proper divisors (41720883).

51749325 is a wasteful number, since it uses less digits than its factorization.

51749325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954 (or 1946 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 51749325 is about 7193.7003690729. The cubic root of 51749325 is about 372.6503754529.

The spelling of 51749325 in words is "fifty-one million, seven hundred forty-nine thousand, three hundred twenty-five".