51274806 has 64 divisors (see below), whose sum is σ = 121651200. Its totient is φ = 14234400.

The previous prime is 51274801. The next prime is 51274807. The reversal of 51274806 is 60847215.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51274801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38215 + ... + 39533.

It is an arithmetic number, because the mean of its divisors is an integer number (1900800).

Almost surely, 2^51274806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51274806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60825600).

51274806 is an abundant number, since it is smaller than the sum of its proper divisors (70376394).

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

51274806 is a wasteful number, since it uses less digits than its factorization.

51274806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 51274806 is about 7160.6428482365. The cubic root of 51274806 is about 371.5078617565.

The spelling of 51274806 in words is "fifty-one million, two hundred seventy-four thousand, eight hundred six".