51223798 has 8 divisors (see below), whose sum is σ = 76903992. Its totient is φ = 25589136.

The previous prime is 51223763. The next prime is 51223813. The reversal of 51223798 is 89732215.

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

It is a congruent number.

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, 8415 + ... + 13162.

It is an arithmetic number, because the mean of its divisors is an integer number (9612999).

Almost surely, 2^51223798 is an apocalyptic number.

51223798 is a deficient number, since it is larger than the sum of its proper divisors (25680194).

51223798 is a wasteful number, since it uses less digits than its factorization.

51223798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22766.

The product of its digits is 30240, while the sum is 37.

The square root of 51223798 is about 7157.0802706131. The cubic root of 51223798 is about 371.3846293043.

It can be divided in two parts, 512 and 23798, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 51223798 in words is "fifty-one million, two hundred twenty-three thousand, seven hundred ninety-eight".