51397350 has 48 divisors (see below), whose sum is σ = 128029008. Its totient is φ = 13645440.

The previous prime is 51397289. The next prime is 51397363. The reversal of 51397350 is 5379315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40932 + ... + 42168.

It is an arithmetic number, because the mean of its divisors is an integer number (2667271).

Almost surely, 2^51397350 is an apocalyptic number.

51397350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51397350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64014504).

51397350 is an abundant number, since it is smaller than the sum of its proper divisors (76631658).

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

51397350 is a wasteful number, since it uses less digits than its factorization.

51397350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1524 counting only the distinct ones).

The product of its (nonzero) digits is 14175, while the sum is 33.

The square root of 51397350 is about 7169.1945154250. The cubic root of 51397350 is about 371.8035874925.

The spelling of 51397350 in words is "fifty-one million, three hundred ninety-seven thousand, three hundred fifty".