51398352 has 30 divisors (see below), whose sum is σ = 143844402. Its totient is φ = 17132736.

The previous prime is 51398329. The next prime is 51398357. The reversal of 51398352 is 25389315.

51398352 is a `hidden beast` number, since 513 + 98 + 3 + 52 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33454656 + 17943696 = 5784^2 + 4236^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51398357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178323 + ... + 178610.

Almost surely, 2^51398352 is an apocalyptic number.

It is an amenable number.

51398352 is an abundant number, since it is smaller than the sum of its proper divisors (92446050).

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

51398352 is a wasteful number, since it uses less digits than its factorization.

51398352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356947 (or 356938 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 51398352 is about 7169.2643974121. The cubic root of 51398352 is about 371.8060036013.

The spelling of 51398352 in words is "fifty-one million, three hundred ninety-eight thousand, three hundred fifty-two".