51898738 has 8 divisors (see below), whose sum is σ = 78786288. Its totient is φ = 25636644.

The previous prime is 51898729. The next prime is 51898771. The reversal of 51898738 is 83789815.

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

It is a junction number, because it is equal to n+sod(n) for n = 51898691 and 51898700.

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, 156156 + ... + 156487.

It is an arithmetic number, because the mean of its divisors is an integer number (9848286).

Almost surely, 2^51898738 is an apocalyptic number.

51898738 is a deficient number, since it is larger than the sum of its proper divisors (26887550).

51898738 is a wasteful number, since it uses less digits than its factorization.

51898738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312728.

The product of its digits is 483840, while the sum is 49.

The square root of 51898738 is about 7204.0778729828. The cubic root of 51898738 is about 373.0086752002.

The spelling of 51898738 in words is "fifty-one million, eight hundred ninety-eight thousand, seven hundred thirty-eight".