51352146 has 36 divisors (see below), whose sum is σ = 116332398. Its totient is φ = 16370112.

The previous prime is 51352129. The next prime is 51352163. The reversal of 51352146 is 64125315.

51352146 is a `hidden beast` number, since 513 + 5 + 2 + 146 = 666.

It is an interprime number because it is at equal distance from previous prime (51352129) and next prime (51352163).

It can be written as a sum of positive squares in only one way, i.e., 31236921 + 20115225 = 5589^2 + 4485^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6826 + ... + 12218.

Almost surely, 2^51352146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51352146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58166199).

51352146 is an abundant number, since it is smaller than the sum of its proper divisors (64980252).

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

51352146 is a wasteful number, since it uses less digits than its factorization.

51352146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5447 (or 5421 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 51352146 is about 7166.0411665019. The cubic root of 51352146 is about 371.6945550291.

The spelling of 51352146 in words is "fifty-one million, three hundred fifty-two thousand, one hundred forty-six".