51974451 has 6 divisors (see below), whose sum is σ = 75074220. Its totient is φ = 34649628.

The previous prime is 51974449. The next prime is 51974459. The reversal of 51974451 is 15447915.

It is not a de Polignac number, because 51974451 - 2¹ = 51974449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51974459) 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 5 ways as a sum of consecutive naturals, for example, 2887461 + ... + 2887478.

It is an arithmetic number, because the mean of its divisors is an integer number (12512370).

Almost surely, 2^51974451 is an apocalyptic number.

51974451 is a deficient number, since it is larger than the sum of its proper divisors (23099769).

51974451 is a wasteful number, since it uses less digits than its factorization.

51974451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5774945 (or 5774942 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 51974451 is about 7209.3308288634. The cubic root of 51974451 is about 373.1899762267.

It can be divided in two parts, 51974 and 451, that added together give a palindrome (52425).

The spelling of 51974451 in words is "fifty-one million, nine hundred seventy-four thousand, four hundred fifty-one".