51486222 has 16 divisors (see below), whose sum is σ = 105367680. Its totient is φ = 16762872.

The previous prime is 51486221. The next prime is 51486229. The reversal of 51486222 is 22268415.

It is a self number, because there is not a number n which added to its sum of digits gives 51486222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51486221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99522 + ... + 100037.

It is an arithmetic number, because the mean of its divisors is an integer number (6585480).

Almost surely, 2^51486222 is an apocalyptic number.

51486222 is an abundant number, since it is smaller than the sum of its proper divisors (53881458).

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

51486222 is a wasteful number, since it uses less digits than its factorization.

51486222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199607.

The product of its digits is 7680, while the sum is 30.

The square root of 51486222 is about 7175.3900242426. The cubic root of 51486222 is about 372.0177613210.

It can be divided in two parts, 514 and 86222, that added together give a triangular number (86736 = T₄₁₆).

The spelling of 51486222 in words is "fifty-one million, four hundred eighty-six thousand, two hundred twenty-two".