51948172 has 12 divisors (see below), whose sum is σ = 91035616. Its totient is φ = 25938000.

The previous prime is 51948167. The next prime is 51948199. The reversal of 51948172 is 27184915.

It is a super-2 number, since 2×51948172² = 5397225148283168, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 5643 + ... + 11650.

Almost surely, 2^51948172 is an apocalyptic number.

It is an amenable number.

51948172 is a deficient number, since it is larger than the sum of its proper divisors (39087444).

51948172 is a wasteful number, since it uses less digits than its factorization.

51948172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18048 (or 18046 counting only the distinct ones).

The product of its digits is 20160, while the sum is 37.

The square root of 51948172 is about 7207.5080298256. The cubic root of 51948172 is about 373.1270689552.

It can be divided in two parts, 5194 and 8172, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 51948172 in words is "fifty-one million, nine hundred forty-eight thousand, one hundred seventy-two".