22506254 has 4 divisors (see below), whose sum is σ = 33759384. Its totient is φ = 11253126.

The previous prime is 22506247. The next prime is 22506269. The reversal of 22506254 is 45260522.

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

It is a super-2 number, since 2×22506254² = 1013062938225032, which contains 22 as substring.

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, 5626562 + ... + 5626565.

It is an arithmetic number, because the mean of its divisors is an integer number (8439846).

Almost surely, 2^22506254 is an apocalyptic number.

22506254 is a deficient number, since it is larger than the sum of its proper divisors (11253130).

22506254 is a wasteful number, since it uses less digits than its factorization.

22506254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11253129.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 22506254 is about 4744.0756739327. The cubic root of 22506254 is about 282.3369628604.

Adding to 22506254 its reverse (45260522), we get a palindrome (67766776).

The spelling of 22506254 in words is "twenty-two million, five hundred six thousand, two hundred fifty-four".