51474642 has 8 divisors (see below), whose sum is σ = 102949296. Its totient is φ = 17158212.

The previous prime is 51474641. The next prime is 51474649. The reversal of 51474642 is 24647415.

It is a sphenic number, since it is the product of 3 distinct primes.

51474642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (51474641) 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 3 ways as a sum of consecutive naturals, for example, 4289548 + ... + 4289559.

It is an arithmetic number, because the mean of its divisors is an integer number (12868662).

Almost surely, 2^51474642 is an apocalyptic number.

51474642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51474642 is a wasteful number, since it uses less digits than its factorization.

51474642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8579112.

The product of its digits is 26880, while the sum is 33.

The square root of 51474642 is about 7174.5830540875. The cubic root of 51474642 is about 371.9898684950.

The spelling of 51474642 in words is "fifty-one million, four hundred seventy-four thousand, six hundred forty-two".