51379406 has 16 divisors (see below), whose sum is σ = 87880464. Its totient is φ = 22318464.

The previous prime is 51379399. The next prime is 51379409. The reversal of 51379406 is 60497315.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51379409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57680 + ... + 58563.

It is an arithmetic number, because the mean of its divisors is an integer number (5492529).

Almost surely, 2^51379406 is an apocalyptic number.

51379406 is a deficient number, since it is larger than the sum of its proper divisors (36501058).

51379406 is a wasteful number, since it uses less digits than its factorization.

51379406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116275.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 51379406 is about 7167.9429406211. The cubic root of 51379406 is about 371.7603140544.

The spelling of 51379406 in words is "fifty-one million, three hundred seventy-nine thousand, four hundred six".