51596280 has 96 divisors (see below), whose sum is σ = 168582960. Its totient is φ = 13685760.

The previous prime is 51596273. The next prime is 51596287. The reversal of 51596280 is 8269515.

It is a happy number.

51596280 is a `hidden beast` number, since 515 + 9 + 62 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (51596273) and next prime (51596287).

It is a super-2 number, since 2×51596280² = 5324352219676800, which contains 22 as substring.

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 (51596287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118944 + ... + 119376.

Almost surely, 2^51596280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51596280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84291480).

51596280 is an abundant number, since it is smaller than the sum of its proper divisors (116986680).

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

51596280 is a wasteful number, since it uses less digits than its factorization.

51596280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 51596280 is about 7183.0550603486. The cubic root of 51596280 is about 372.2826502555.

Adding to 51596280 its product of nonzero digits (21600), we get a triangular number (51617880 = T₁₀₁₆₀).

The spelling of 51596280 in words is "fifty-one million, five hundred ninety-six thousand, two hundred eighty".