51496650 has 108 divisors (see below), whose sum is σ = 146480022. Its totient is φ = 12968640.

The previous prime is 51496619. The next prime is 51496657. The reversal of 51496650 is 5669415.

51496650 is a `hidden beast` number, since 514 + 96 + 6 + 50 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 24591681 + 26904969 = 4959^2 + 5187^2 .

It is a super-2 number, since 2×51496650² = 5303809922445000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51496657) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 162292 + ... + 162608.

Almost surely, 2^51496650 is an apocalyptic number.

51496650 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 51496650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73240011).

51496650 is an abundant number, since it is smaller than the sum of its proper divisors (94983372).

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

51496650 is a wasteful number, since it uses less digits than its factorization.

51496650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 346 counting only the distinct ones).

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

The square root of 51496650 is about 7176.1166378481. The cubic root of 51496650 is about 372.0428757379.

The spelling of 51496650 in words is "fifty-one million, four hundred ninety-six thousand, six hundred fifty".