22150401 has 48 divisors (see below), whose sum is σ = 37767744. Its totient is φ = 11442816.

The previous prime is 22150393. The next prime is 22150423. The reversal of 22150401 is 10405122.

It is not a de Polignac number, because 22150401 - 2³ = 22150393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22150481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 127951 + ... + 128123.

It is an arithmetic number, because the mean of its divisors is an integer number (786828).

Almost surely, 2^22150401 is an apocalyptic number.

22150401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22150401 is a deficient number, since it is larger than the sum of its proper divisors (15617343).

22150401 is a wasteful number, since it uses less digits than its factorization.

22150401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 22150401 is about 4706.4212518643. The cubic root of 22150401 is about 280.8410130555.

Adding to 22150401 its reverse (10405122), we get a palindrome (32555523).

The spelling of 22150401 in words is "twenty-two million, one hundred fifty thousand, four hundred one".