51739370 has 8 divisors (see below), whose sum is σ = 93130884. Its totient is φ = 20695744.

The previous prime is 51739361. The next prime is 51739409. The reversal of 51739370 is 7393715.

It can be written as a sum of positive squares in 2 ways, for example, as 51739249 + 121 = 7193^2 + 11^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 51739370.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2586959 + ... + 2586978.

Almost surely, 2^51739370 is an apocalyptic number.

51739370 is a deficient number, since it is larger than the sum of its proper divisors (41391514).

51739370 is a wasteful number, since it uses less digits than its factorization.

51739370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173944.

The product of its (nonzero) digits is 19845, while the sum is 35.

The square root of 51739370 is about 7193.0084109502. The cubic root of 51739370 is about 372.6264783786.

The spelling of 51739370 in words is "fifty-one million, seven hundred thirty-nine thousand, three hundred seventy".