221151454 has 8 divisors (see below), whose sum is σ = 331982640. Its totient is φ = 110490576.

The previous prime is 221151443. The next prime is 221151461. The reversal of 221151454 is 454151122.

221151454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39279 + ... + 44554.

It is an arithmetic number, because the mean of its divisors is an integer number (41497830).

Almost surely, 2^221151454 is an apocalyptic number.

221151454 is a deficient number, since it is larger than the sum of its proper divisors (110831186).

221151454 is a wasteful number, since it uses less digits than its factorization.

221151454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85154.

The product of its digits is 1600, while the sum is 25.

The square root of 221151454 is about 14871.1618241481. The cubic root of 221151454 is about 604.7324400303.

The spelling of 221151454 in words is "two hundred twenty-one million, one hundred fifty-one thousand, four hundred fifty-four".