51398334 has 64 divisors (see below), whose sum is σ = 123943680. Its totient is φ = 15694560.

The previous prime is 51398329. The next prime is 51398357. The reversal of 51398334 is 43389315.

It is a super-3 number, since 3×51398334³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147949 + ... + 148295.

It is an arithmetic number, because the mean of its divisors is an integer number (1936620).

Almost surely, 2^51398334 is an apocalyptic number.

51398334 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51398334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61971840).

51398334 is an abundant number, since it is smaller than the sum of its proper divisors (72545346).

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

51398334 is a wasteful number, since it uses less digits than its factorization.

51398334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 576 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 51398334 is about 7169.2631420530. The cubic root of 51398334 is about 371.8059601984.

The spelling of 51398334 in words is "fifty-one million, three hundred ninety-eight thousand, three hundred thirty-four".