74551422 has 64 divisors (see below), whose sum is σ = 168664320. Its totient is φ = 21772800.

The previous prime is 74551417. The next prime is 74551429. The reversal of 74551422 is 22415547.

It is a self number, because there is not a number n which added to its sum of digits gives 74551422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74551429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309222 + ... + 309462.

It is an arithmetic number, because the mean of its divisors is an integer number (2635380).

Almost surely, 2^74551422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74551422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84332160).

74551422 is an abundant number, since it is smaller than the sum of its proper divisors (94112898).

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

74551422 is a wasteful number, since it uses less digits than its factorization.

74551422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409.

The product of its digits is 11200, while the sum is 30.

The square root of 74551422 is about 8634.3165334611. The cubic root of 74551422 is about 420.8738834196.

Adding to 74551422 its reverse (22415547), we get a palindrome (96966969).

The spelling of 74551422 in words is "seventy-four million, five hundred fifty-one thousand, four hundred twenty-two".