40151222 has 4 divisors (see below), whose sum is σ = 60226836. Its totient is φ = 20075610.

The previous prime is 40151219. The next prime is 40151239. The reversal of 40151222 is 22215104.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×40151222² = 3224241256186568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40151222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10037804 + ... + 10037807.

It is an arithmetic number, because the mean of its divisors is an integer number (15056709).

Almost surely, 2^40151222 is an apocalyptic number.

40151222 is a deficient number, since it is larger than the sum of its proper divisors (20075614).

40151222 is a wasteful number, since it uses less digits than its factorization.

40151222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20075613.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 40151222 is about 6336.4991911938. The cubic root of 40151222 is about 342.4256240013.

Adding to 40151222 its reverse (22215104), we get a palindrome (62366326).

The spelling of 40151222 in words is "forty million, one hundred fifty-one thousand, two hundred twenty-two".