22154945 has 8 divisors (see below), whose sum is σ = 26611200. Its totient is φ = 17707120.

The previous prime is 22154939. The next prime is 22154963. The reversal of 22154945 is 54945122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22154945 - 2⁴ = 22154929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9440 + ... + 11550.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^22154945 is an apocalyptic number.

It is an amenable number.

22154945 is a deficient number, since it is larger than the sum of its proper divisors (4456255).

22154945 is a wasteful number, since it uses less digits than its factorization.

22154945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4215.

The product of its digits is 14400, while the sum is 32.

The square root of 22154945 is about 4706.9039718269. The cubic root of 22154945 is about 280.8602159330.

The spelling of 22154945 in words is "twenty-two million, one hundred fifty-four thousand, nine hundred forty-five".