22150477 has 4 divisors (see below), whose sum is σ = 22164156. Its totient is φ = 22136800.

The previous prime is 22150423. The next prime is 22150481. The reversal of 22150477 is 77405122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12823561 + 9326916 = 3581^2 + 3054^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22150477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22150487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4024 + ... + 7777.

It is an arithmetic number, because the mean of its divisors is an integer number (5541039).

Almost surely, 2^22150477 is an apocalyptic number.

It is an amenable number.

22150477 is a deficient number, since it is larger than the sum of its proper divisors (13679).

22150477 is a wasteful number, since it uses less digits than its factorization.

22150477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13678.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 22150477 is about 4706.4293259328. The cubic root of 22150477 is about 280.8413342520.

Adding to 22150477 its reverse (77405122), we get a palindrome (99555599).

The spelling of 22150477 in words is "twenty-two million, one hundred fifty thousand, four hundred seventy-seven".