51276450 has 48 divisors (see below), whose sum is σ = 130616640. Its totient is φ = 13302720.

The previous prime is 51276443. The next prime is 51276457. The reversal of 51276450 is 5467215.

It is an interprime number because it is at equal distance from previous prime (51276443) and next prime (51276457).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (51276457) 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, 931 + ... + 10169.

It is an arithmetic number, because the mean of its divisors is an integer number (2721180).

Almost surely, 2^51276450 is an apocalyptic number.

51276450 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 51276450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65308320).

51276450 is an abundant number, since it is smaller than the sum of its proper divisors (79340190).

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

51276450 is a wasteful number, since it uses less digits than its factorization.

51276450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9291 (or 9286 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 51276450 is about 7160.7576414790. The cubic root of 51276450 is about 371.5118322081.

The spelling of 51276450 in words is "fifty-one million, two hundred seventy-six thousand, four hundred fifty".